time waster

柯林斯词典

time waster (also time-waster) (time wasters)

• 1. N-COUNT If you say that someone or something is a time waster, you mean that they cause you to spend a lot of time doing something that is unnecessary or does not produce any benefit. 浪费时间的人; 浪费时间的事[表不满]

  Surfing the Internet is fun, but it's also a time waster. 上网很有趣，但也是一件浪费时间的事。

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