They put Mamoun and Mansour in different classes so they could know who they were talking to.Five summers ago,I couldn't tell them apart before the back
Mamoun,Mansour是人名,分别是：马穆恩,木萨尔
Tell apart:tell apart 分辨
tell against 不利某人
tell apart 分辨
tell from 区别
分辨,区别
apart adv.分别；相距
tell apart 分辨,区别
perform vt.履行；表演；vi.行动
辨别,识别
tell one from the other把两者区别开
tell apart辨别,识别
think of想起；想出；企图；考虑
分辨；辨别,区别
talk sb out of sth 劝某人不做某事
tell apart 分辨；辨别,区别
the other day 前几天,最近
本句的意思是：他们把马穆恩和木萨尔放在不同的班级里,以便指导他们可能和谁聊天.但是五个夏天过去了,我还是不能从他们的背后分辨出他们.
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