但是海洋中浮游动物每天的垂直运动——夜里上浮以寻找食物，白天下潜以躲避捕食者——也可以被视作迁徒。
But daily vertical movements by zooplankton in the ocean—upward by night to seek food, downward by day to escape predators—can also be considered migration.
据谣传这所房间每天夜里有什么东西吼叫。
Rumour has it that something roars at the night in this house.
每天夜里，我把赚到的钱拿回家，悉数全给母亲，不拿一分一毫。
Every night I took the cash home and gave it to my mother. I was never paid a dime.
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