是一个十分常用的词，它既可以作连词、介词、副词及代词，又可以和其它词组合构成短语来表示许许多多的意思。

But "is a very commonly used word. It can be used as a conjunction, a preposition, an adverb and a relative pronoun in sentences."

youdao

在同声传译这一受时间严格限制、难度极高的语际转换活动中，介词或介词短语的处理是一个难点。

And sometimes it is difficult to deal with them in simultaneous interpretation, which is a high complex discourse performance with severe time pressure.

youdao