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1.by the end 到...为止
I'm always broke by the end of the month.
我总是一到月底就没钱花了。
2.As for 关于；至于
As for food for the party, that's all being taken care of.
关于聚会要用的食物，都在置办当中。
3.cool down 冷却
He fanned himself with a newspaper to cool down.
他用一张报纸给自己扇凉。
n. 口哨，汽笛，厂笛，啸啸声，用于召唤或发布命令的哨声
