The competition has been thrown wide open by the absence of the world champion.

由于世界冠军缺阵，这场比赛变得胜负难定。

柯林斯例句

The police were delayed by the absence of information about the crime.

警方因未掌握犯罪情报而延搁了行动.

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Neutral tone is much shorter tone and is identified by the absence of tone mark.

轻声的音长比重读短得多,而且不标调号.

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These two were gentlemen of a race which is not distinguished by the absence of reserve.

这两位先生实际上是一样的,都不是开诚布公的人.

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Hole - Similar to a positive charge, this is caused by the absence of a valence electron.

空穴 - 和正电荷类似, 是由缺少价电子引起的.

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