vigilant相关的词根或词缀是: vivvitvig

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The iraqi military keeps a vigilant eye on the river .

伊拉克军方因此对河面情况保持高度警觉。

People are vigilant on issues that interest them .

人们在其感兴趣的事情上是警惕的。

In beijing , we will be more vigilant than ever .

今年的北京奥运会，我们将比以往更加警醒这个问题。

The temptation to surrender control to machines that are smarter , more vigilant and less prone to boredom , irritation and emotional outbursts than people will be overwhelming .

引诱人类把控制权交给比人类更聪明、更机警并且更不容易生厌、恼怒和情感迸发的机器，将势不可挡。

Another important aspect of being a good neighbor is to be vigilant .

另一个具备好邻居素质的重要方面是要提高警觉。