on the watch的用法和樣例：
例句
- The nurse watched to see what would happen.
護士注意著會發生什麼情況。 - His eyes were back on the faint pulsing movement in the chest.
他再度注意著胸部輕微的起伏動作。 - Cowboys should be on guard against the attacks from wild animals.
牛仔必須提防著野獸的襲擊。 - Wayne is constantly up to something and Wes and Rio you have to watch out for as well.
韋恩經常想捉弄別人，里奧和維斯你也得提防著點。
辭彙搭配
- be on the watch (對 ... )留神...
- on the watch for 密切注意著
