The cliff drops off suddenly here.

悬崖在这里突然一落千丈。

Worry stays fairly steady until 50, then sharply drops off.

忧虑感在50岁之前保持相当稳定，然后急剧降低。

Performance drops off precipitously when requests are queued.

当请求排队时,性能会急剧下降.

Finally she drops off and I pull my arm from under her.

最后她睡着了,我从她身下抽出胳膊.

The tick stops draining you and drops off after you're dead.

你死了以后壁虱才会停止吸你的血，掉下来。

Sag: A defensive tactic in which a player drops off his man to help double-team a player in the pivot.

协防（sag）：一种防守战术。球员放弃自己防守的队员来帮助在中线的队友。

In case of fire, the meltdown first occurs in metal welded at low melting points and the decorative slice drops off.

当火灾发生时，装饰片与支架之间的低熔点焊接金属首先熔化，装饰片脱落。

During an infection the number of mites increases rapidly, then drops off leaving infected persons with a relatively stable population.

螨感染人数在急剧增加，感染人数则下降客留下了一个比较稳定的人口。

During an infection the number of mites increases rapidly, then drops off leaving infected persons with a relatively stable population .

螨感染人数在急剧增加，感染人数则下降客留下了一个比较稳定的人口。

Video depicts the Earth as represented by the United States within a day suddenly drops off sharply into the ice age of science fiction.

影片描绘的是以美国为代表的地球一天之内突然急剧降温，进入冰期的科幻故事。