As we all know,light (travel)faster than sound
As we all know,light (travel)faster than sound
英语人气:265 ℃时间:2019-12-13 10:39:42
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As we all know,light (travels)faster than sound .光比声音传播的快,这是一个公认的事实,是一个自然规律,所以不管全文是现在时还是过去式,这一类表达都用一般现在时
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