to be alert
网络释义
Be alert to 留意 ; 对…警惕 ; 警觉
to be observant and alert 眼观六路耳听八方
To Be Highly Alert 值得高度警惕
Be alert to safety 工作中注意安全
be alert to something 能够觉察的
双语例句原声例句权威例句
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It's a very intense job, and they have to be alert every moment.
这是高度集中的工作，他们需要时刻保持警惕。
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The key to the method is to be alert to new words.
使用这个方法的关键是对生词的警觉。
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"You always need to be alert and analyze what's going on," she adds.
“你需要时刻警惕，并且分析发生了什么事情。”她补充道。
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The U.S.State Department has issued a fresh travel alert for India, saying the U.S.government continues to receive information that terrorist groups may be planning attacks here.
VOA: standard.2009.10.30
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Because it's a very intense job they have to be alert every moment.
因为是高度集中的工作,他们需要时刻保持警惕。
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"With that,I expect the security agencies to be 24-hours alert.
VOA: standard.2009.07.30
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