1、[下降]descend; go or come down; ｄｒｏｐ; fall;2、飞行员被告知要下降到2-2000英尺。The pilots were told to descend to two-two thousand feet.3、所以我可以下降至海底很深的地方。So I can descend to considerable depths.4、近年来致命交通事故发生率已经下降。Fatal road accidents have decreased in frequency over recent years.

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