He works at the American embassy.

他在美国大使馆工作。

He works at the American Embassy in Moscow.

他在莫斯科的美国驻俄大使馆工作.

That's when the American Embassy is to be moved from Tel Aviv and reopened.

届时美国大使馆将搬离特拉维夫，并在耶路撒冷重新开门。

When the former Shah was allowed to receive medical treatment in the US, the new Iranian regime stormed the American Embassy in Tehran.

当这位前国王得以在美国接受治疗时，新伊朗政权下的人民冲进了美国在德黑兰的大使馆。