be on it的用法和樣例:
例句
- All necessary materials should be on hand.
一切必須的材料應準備就緒。
- I will see to it that everything is ready in time.
我會保證任何事情都會及時準備就緒。
- He is very skilled at pivoting on his heel.
他能非常熟練地以腳跟旋轉。
- It takes a skilled pilot to steer the ship through.
要使船過去需要一名技術熟練的舵手。
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