英语:from time to time意思?用法!

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英语:from time to time意思?用法!

不时,偶尔,间或,有时1.From time to time he fired questions at me.他不时向我提出许多问题.2.Ships are laid up,from time to time,for repairs.船只常常因不能使用而需要修理.3.I can see Hieks at the library f...