预约下载频道内容_预约
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例子：waste[we st]
释义·n.an unnecessary or wrong use of money,substances,time,energy,abilities,tec.浪费；
滥用 unwanted matter or material of any type,especially what is left after useful substances or parts have been removed 废品，垃圾，废物，废料
v.to use too much of something or something badly when there is a limited amount of it
浪费;未好好利用
例句·Come on,let's get started-we've wasted enough time already.
快点儿，我们开始——我们已经浪费了不少时间了
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