The roof garden sits above the shopping centre like a green island that nobody has bothered to name. Down below, people queue for shoes and argue about parking. Up here, there are four long beds of herbs, a row of apple trees in barrels and a view of the car park.
屋顶花园坐落在购物中心的上方，像一座没人费心取名的绿色小岛。楼下，人们排着队买鞋，为停车位争吵。而在这上面，有四条长长的香草花圃、一排种在木桶里的苹果树，还有一片停车场的景色。
Sunniva has volunteered here every Saturday since January. She is sixteen, and she is the youngest person on the team by about thirty years. Most weeks she waters the beds, pulls weeds and listens to the older volunteers disagree about compost.
桑妮娃从一月起每个星期六都来这里做志愿者。她十六岁，是团队里最年轻的人，比其他人小了大约三十岁。大多数星期，她都是浇花圃、拔杂草，听年长的志愿者为堆肥争论不休。
This Saturday, though, she has a real job. Damir, who is nineteen and keeps the whole garden running, hands her a tin of cream paint and a wide brush.
不过这个星期六，她有了一份真正的差事。十九岁、负责维持整座花园运转的达米尔递给她一罐奶油色油漆和一把宽刷子。
"The back wall looks tired," he says. "Give it two coats, from the corner to the stairwell door. I have to fix the gutters on the other side, so you are on your own."
“后面那堵墙看着没精神了，”他说，“刷两遍，从墙角一直刷到楼梯间的门。我得去修另一边的排水槽，所以你得自己干了。”
"On my own?" Sunniva says. "What if I do it wrong?"
“我自己？”桑妮娃说，“要是我刷错了怎么办？”
"It is a wall," Damir says. "The worst thing you can do is leave a drip."
“就是一堵墙，”达米尔说，“你能犯的最糟糕的错，就是留下一道流痕。”
He leaves, and the roof falls quiet except for the hum of the air vents. Sunniva lays newspaper along the bottom of the wall and begins.
他走了，屋顶安静下来，只剩下通风口的嗡嗡声。桑妮娃沿着墙根铺上报纸，开始动手。
Painting turns out to be more peaceful than she expected. The brush moves in long strokes, and the old grey disappears a metre at a time. She likes the way a flaw vanishes the moment she covers it. A crack, a stain, a patch where someone once taped up a poster: all of it becomes smooth and cream.
结果，刷漆比她预想的要平静得多。刷子一下一下拉出长长的笔触，旧的灰色一米一米地消失。她喜欢瑕疵一被盖住就不见的感觉。一条裂缝，一块污渍，一处曾经有人贴过海报的地方：这一切都变得平滑，变成了奶油色。
Halfway along the wall, at the height of her knee, she finds a very small door. It is made of metal and is about the size of a large book. Its hinges are clogged with so many old coats of paint that the edges have nearly melted into the brick.
刷到墙的中段，在齐膝盖的高度，她发现了一扇很小很小的门。它是金属做的，大约有一本大书那么大。铰链被无数层旧油漆堵住了，边缘几乎和砖头融为一体。
Sunniva crouches and studies it. There is no handle, only a little dent where a handle used to be. Nobody has mentioned this door in five months of Saturdays. She decides it must be a leftover from some old plan, a decoration that never found its purpose.
桑妮娃蹲下来，仔细端详。门上没有把手，只有一个小凹痕，那里曾经装过把手。五个月的星期六里，没有人提起过这扇门。她断定这一定是某个旧计划留下的东西，一件始终没找到用处的装饰。
A thin gap runs around the frame, dark and untidy against the new cream. It bothers her more than it should. She finds a tube of filler in the toolbox, presses a neat line of it into the gap and smooths it with her thumb. Then she paints over the door itself, twice, until the whole wall is one clean surface.
门框周围有一道细细的缝隙，在崭新的奶油色衬托下显得又黑又乱。它让她心烦，超出了应有的程度。她在工具箱里找到一管填缝剂，沿着缝隙压进一条整齐的线，再用拇指抹平。然后她把门本身也刷了漆，刷了两遍，直到整面墙成了一个干净的整体。
When she steps back, she can hardly tell where the door begins. She feels the small, private pride of someone who has made a problem disappear.
她退后一步，几乎分辨不出门从哪里开始。她心里涌起一种小小的、不为人知的自豪，就像一个把问题变没了的人。
Damir returns at four o'clock, wiping his hands on his trousers. He stops in front of the wall and whistles.
达米尔四点钟回来了，在裤子上擦着手。他在那堵墙前停住，吹了声口哨。
"That looks like a different building," he says. "Honestly, Sunniva, I thought you would leave stripes."
“看起来像换了一栋楼，”他说，“说真的，桑妮娃，我还以为你会刷出一道一道的条纹呢。”
"I was careful," she says, and she smiles for the first time all day.
“我很仔细的。”她说，这一天里她第一次笑了。
They spend the next hour tying up the tomato plants, and Damir talks while they work. He explains that the sprinklers come on at five, because the beds dry out fastest on Saturday evenings. A pump in the basement sends water up through a long pipe, and a single valve controls the whole system.
接下来的一个小时，他们一起绑番茄秧，达米尔一边干活一边说话。他解释说，洒水器五点钟会启动，因为星期六傍晚花圃干得最快。地下室里的一台水泵通过一根长管子把水送上来，整个系统由一个阀门控制。
"That valve is the only thing that really matters up here," he says. "If it stays shut, the garden is just a field of expensive sticks. I open it by hand every Saturday before the timer starts. The hatch is in the back wall, about knee height. You cannot miss it."
“这儿真正要紧的只有那个阀门，”他说，“要是它一直关着，花园就只是一片昂贵的枯枝。每个星期六，定时器启动前我都要亲手把它打开。检修门就在后墙上，大约齐膝高。你不可能看不到。”
Sunniva stops with a tomato stem in her fingers. A cold feeling begins in her stomach and spreads outward.
桑妮娃手里捏着一根番茄茎，停住了。一种冰冷的感觉从她的胃里升起，向外扩散。
"Is it a metal door?" she asks. "About this big?"
“是一扇金属门吗？”她问，“大概这么大？”
Damir looks at her. Then he looks at the wall, and his face changes slowly, the way a window changes when someone draws the curtains.
达米尔看着她。然后他看向那堵墙，脸色慢慢变了，就像有人拉上窗帘时窗户的样子。
"Please tell me you did not paint the hatch," he says.
“求你告诉我，你没把检修门刷了漆。”他说。
Sunniva has about two seconds to decide what kind of person she is going to be. The excuses are already lined up in her head, and every one of them is true. Nobody told her. There was no label. It looked like decoration. She notices that none of them will get the water moving.
桑妮娃大约有两秒钟来决定自己要做个什么样的人。借口已经在她脑子里排好了队，而且每一条都是真的。没有人告诉过她。门上没有标签。它看起来像装饰。她注意到，这些借口没有一条能让水流起来。
"I did," she says. "I filled the gap around it, and I painted it twice. I thought it was decoration. I am sorry."
“我刷了，”她说，“我把它周围的缝填住了，还刷了两遍。我以为它是装饰。对不起。”
Damir closes his eyes for a moment. When he opens them, he checks his phone, and she sees him doing the arithmetic.
达米尔闭了一会儿眼睛。睁开时，他看了看手机，她看见他在心算。
"It is ten to five," he says. "If the pump starts against a closed valve, it could burn out. And the new seedlings will not last the night without water. Come on."
“现在差十分钟五点，”他说，“如果水泵对着关死的阀门启动，可能会烧坏。而且新栽的幼苗没有水撑不过今晚。快来。”
They kneel in front of the wall together. In the afternoon light the paint looks perfect, which is the worst part. The door has vanished so completely that Damir has to feel along the bricks with his fingers to find it.
他们一起跪在墙前。在下午的光线里，油漆看上去完美无缺，而这正是最糟糕的地方。门消失得太彻底了，达米尔不得不用手指沿着砖缝摸索才找到它。
He hands her a craft knife. "Score the line first," he says. "Gently, as if you are drawing, not cutting. If you slip, you will tear the paint off the whole panel."
他递给她一把美工刀。“先把那条线划开，”他说，“轻一点，就像在画，而不是在切。要是手滑了，整块板上的漆都会被撕下来。”
Her hand shakes at first. Then she remembers how steady the brush felt, and she lets the blade follow the same patient line. The paint cracks in a thin, dark outline. The filler crumbles in small white pieces, like old plaster. Damir slides a flat screwdriver into the corner and leans on it.
起初她的手在发抖。然后她想起刷子用起来是多么稳，便让刀刃沿着同样耐心的线条走。油漆裂开，留下一道细细的深色轮廓。填缝剂碎成一块块白色的小碎片，像旧灰泥。达米尔把一把一字螺丝刀插进角落，用力撬。
For a moment nothing happens. Then the little door gives way with a squeal that echoes across the roof. A breath of cool, damp air comes out of the dark. Inside, she can see a pipe as thick as her arm and a valve with a yellow handle.
起初什么也没发生。然后，小门吱的一声松开了，尖叫声在屋顶上回荡。一股清凉潮湿的气息从黑暗里涌出。里面，她能看到一根跟她手臂一样粗的管子，和一个黄色把手的阀门。
"Your turn," Damir says. "It is stiff. Use both hands."
“轮到你了，”达米尔说，“很紧。用两只手。”
She grips the handle and pulls with all her weight. It moves a quarter turn, then a half, and somewhere below her feet a pump wakes up with a long, low groan. Along the beds, the hoses swell like sleeping snakes. At exactly five o'clock, the sprinklers cough once and then throw a silver fan of water across the herbs.
她握住把手，使出全身的力气拉。它转了四分之一圈，然后半圈，脚下某处，一台水泵发出一声悠长低沉的呻吟，醒了过来。沿着花圃，水管像沉睡的蛇一样鼓了起来。正好五点钟，洒水器咳了一声，然后向香草洒出一把银色的扇形水幕。
Neither of them speaks for a while. Damir sits down on an upturned bucket and laughs quietly, mostly with relief.
两个人好一阵子都没说话。达米尔坐在一只倒扣的水桶上，轻轻地笑了，多半是因为如释重负。
"For the record," he says, "I should have shown you the hatch this morning. I assumed you knew. Everyone who has ever worked here knows it, so I forgot that you had to learn it too."
“先说清楚，”他说，“今天早上我就该带你看看那扇检修门的。我以为你知道。在这儿干过的人都知道，所以我忘了你也得学。”
"I should have asked," Sunniva says. "I saw a door that nobody had ever explained to me, and I decided it was not important."
“我应该问的，”桑妮娃说，“我看见一扇从没人向我解释过的门，就断定它不重要。”
"That is a very human mistake," Damir says. "Most people only learn what a thing is for after they have covered it up."
“这是一个非常人性的错误，”达米尔说，“大多数人都是在把东西盖住之后，才弄明白它是做什么用的。”
She looks at the wall. The cream paint is now scarred with a rough rectangle, and the cut lines run across her careful work like cracks in a mirror. A few hours ago she would have wanted to hide that damage as well. Now she finds that she does not mind it. The scar tells the truth about what the wall contains.
她看着那堵墙。奶油色的油漆上，如今留下了一块粗糙的长方形伤疤，切口的线条横过她精心刷好的成果，像镜子上的裂纹。几个小时前，她还会想把这道损伤也藏起来。现在她发现自己并不介意。这道疤痕如实说出了这面墙里藏着什么。
"Do I have to paint it again?" she asks.
“我还得再刷一遍吗？”她问。
"Yes, but not the same way," Damir says. He picks up the tin of blue paint that has been standing by the stairs since March. "Let us make the door impossible to forget."
“要，但不能再用原来的办法了，”达米尔说。他拿起那罐从三月起就放在楼梯旁边的蓝色油漆。“咱们让这扇门变得永远不会被忘记。”
Sunniva takes the thin brush from the toolbox. She wipes a stray drip from the frame with her thumb, dips the bristles into the blue and starts with the hinges.
桑妮娃从工具箱里拿出细刷子。她用拇指擦掉门框上一滴多余的流痕，把刷毛蘸进蓝漆里，从铰链开始刷起。
