put on the alert

 
  • 處于戒備狀態

put on the alert的用法和樣例:

例句

  1. Knowing that danger threatened, they were on the alert.
    因為知道可能會發生危險,他們處于戒備狀態。
  2. These networks are on the alert for warning signs that show the weakening of rock layers that can precede an earthquake.
    這些網絡始終處于戒備狀態,搜索地震前巖石可能松動的警告跡象。

put on the alert的相關資料:

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