练习册

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    表示条件,意为"只要",其意思和用法相当于as long as.while可位于句首,也可位于句中. e.g. You don't have to worry while we are here. 只要我们在,你就别着急. There will be life while there is water and air. 只要有空气和水,就有生命. While there is life, there is hope. 留得生命在,不怕没希望. 【查看更多】

     

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