- 释义：
- adj. 警惕的；机敏的
- 例句：
-
Alert readers may have noticed the misprint in last week's column.
细心的读者可能已经注意到上周专栏中的印刷错误了.
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The district was put on red alert during a terrorist's bomb scare.
这个地区在得到恐怖分子炸弹恐吓后作了应急准备.
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In our reading we should always be alert for idiomatic expressions.
我们在阅读过程中应经常注意惯用法.
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