Ivy walks into Room 204 for her Monday science class. The room looks strange today.
艾薇走进204教室，去上星期一的科学课。今天这间教室看起来很奇怪。
All the desks are gone. Only empty shelves stand in their place.
所有的课桌都不见了，原来的地方只剩下空空的架子。
Ivy checks her school schedule app again. It still says Room 204, second period.
艾薇又看了一遍学校的课表应用。上面还是写着204教室，第二节课。
Other students arrive in small groups. They laugh and talk, but no one understands why.
其他同学三三两两地到了。他们说说笑笑，但没有人明白这是怎么回事。
"Maybe we are in the wrong place," says her friend Wyatt.
“也许我们走错地方了。”她的朋友怀亚特说。
Ivy looks at the room number by the door. It clearly says 204.
艾薇看了看门边的房间号。上面清清楚楚写着204。
She walks to the school office to ask. The secretary checks the computer screen.
她走到学校办公室去问。秘书看了看电脑屏幕。
"Room 204 moved to the second floor this week," the secretary says. "We sent an email on Friday."
“204教室这个星期搬到二楼了，”秘书说，“我们星期五发过邮件。”
Ivy checks her email on her phone. There it is, one message she never opened.
艾薇用手机看邮件。找到了，是一封她从没打开过的邮件。
She thanks the secretary and runs to find Wyatt. "Follow me," she says. "We have the wrong floor."
她谢过秘书，跑去找怀亚特。“跟我来，”她说，“我们走错楼层了。”
They climb the stairs together and find the real Room 204. The teacher stands at the board, ready to start.
他们一起上楼，找到了真正的204教室。老师站在黑板前，准备开始上课。
"Sorry we're late," Ivy says. "We didn't see the email about the room change."
“对不起，我们迟到了，”艾薇说，“我们没看到换教室的邮件。”
