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In a fit of efficiency he answered all his mail in an hour.
他猛写了一阵，在一小时内回复了全部信件。
youdao
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The removal rate is 85% after 3 hour. The efficiency is constant in operating.
三小时的去除率达到了85% ，而且可以连续使用，效率不变。
youdao
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The removal rate is 85% after 3 hour. The efficiency is constant in operating.
三小时的去除率达到了85% ，而且可以连续使用，效率不变。
youdao