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- To drop suddenly before climbing. Used of an aircraft. 骤降上升前的急降（用于飞机）
- Take a warm sweater.Because the temperature wil drop suddenly at night. 带上一件暖和的毛衣，因为夜间气温会急骤下降。
- Please take a warm sweater because the temperature will drop suddenly at night. 带上一件暖和的毛衣，因为夜间气温会急骤下降。
- His pulse-rate dropped suddenly. 他的脉搏突然放慢了.
- His pulse rate dropped suddenly. 他的脉搏速率突然下降。
- Tears drop suddenly dry up. 眼泪刚落下就干枯。
- If the plane drops suddenly,it is probably an air pocket (air current ). 如果飞机突然下落，可能是碰到了气阱(气流)。
- The wind had dropped suddenly and the rain had become a light drizzle. 风力大减，但仍下着毛毛细雨。
- If the plane drops suddenly, it is probably an air pocket (air current ). 如果飞机突然下落，可能是碰到了气阱(气流)。
- With these brave words in his mouth he dropped suddenly with arms and legs all weak. 这豪言壮语还没有完全说出口，他突然感到手足无力，软弱地弯下身子。
- If the volume level is too high, the speaker protection circuit activates, and the sound level drops suddenly. 如果音量电平太高,扬声器保护电路即起作用而突然地减小声音。
- Coming in with a skinful, as I usually did, it was like dropping suddenly to a low altitude. 进门时我通常都喝得大醉，一进来便好像突然来到了海拔低的地方。
- Flowrate of argon has influence markedly upon pressure in the nozzle, and the pressure drops suddenly down the slide gate. 吹氩量对水口内的压力存在较大的影响，压力在滑动水口处存在突降；
- A sudden drop from a relatively erect to a less erect position. 突然俯身低下从垂直方向上相对高的位置降到低的位置
- He twisted up with a sudden stab of pain. 一阵突然的剧疼使他挺不起身来。
- He said he would drop her like a hot potato. 他说他会把她像烫手的东西一样迫不及待地扔掉。
- The rain is leaking in large drop through the roof. 雨正大滴大滴地从屋顶漏下来。
- Interest in the book began to drop off. 人们对这本书的兴趣开始减退了。
- A drop of blood slid down his leg. 他的腿上流着一点儿血。
- Don't forget to drop by at the gas station. 别忘了到煤气站去看看。
