Hence can be used in the following ways: hence 有以下用法
as a way of starting a sentence, clause, or phrase, showing how it is related to what has just been said: 用于引导句子、从句或短语, 表示其与前面所说内容之间的关系:Crime is on the increase; hence the need for more police. 犯罪活动呈上升趋势,所以需要更多的警察。
as an ordinary adverb (following expressions of time): 用作普通副词(跟在时间表述之后):We must await the result of the election two weeks hence. 我们必须等到两星期后才能知道选举结果。
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used for introducing something that is a result of the fact that has just been stated因此;所以;由此
His grandfather was Greek; hence the surname. 他祖父是希腊人,所以才有这一姓氏。
Alcohol can cause liver failure and hence death. 酒精会导致肝衰竭并因此导致死亡。