翻译当时的政府迫使爱因斯坦离开了自己的祖国。（force）

The then government forced Einstein to leave his own country~~then是当时的意思。the then president就是当时的总统。
at that time固然也对。但是then也是可以的。以前我学的课文就这么表达。
我是英语专业的。怎么会蒙人呢。又不是没学过这一用法。
楼下的不知道就别说别人不对。

Einstein was forced to leave his homeland by the govement.

The government at that time forced Einstein to leave his homeland.只能用at that time，一楼蒙你呢。

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不好意思，刚查到then这个意思的adj用法，你用的什么在线词典？