drop off

柯林斯词典

drop off (dropping,dropped,drops)

• 1. →see drop

• 2. PHRASAL VERB If you drop off to sleep, you go to sleep. 睡着[非正式]

  I must have dropped off to sleep. 我一定是睡着了。

• 3. PHRASAL VERB If the level of something drops off, it becomes less. 下降

  Two years later, earnings from the stocks had dropped off by nearly 50%. 2年后，股票收益已下降了近50％。

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