The temperature suddenly dropped to 40 c below zero
气温突然下降到摄氏零下40度。
The temperature suddenly dropped to zero[40' below zero]C.
气温突然下降到了0度[零下40度]。
The mercury ped to ten below zero
温度突然下降到零下10度。
The temperature suddenly dropped to zero (40°below zero) C.
气温突然下降到了零度（零下四十度）。
a sudden decline in strength or number or importance.
力量、数量或重要性的突然下降。
a local region of low pressure or descending air that causes a plane to lose height suddenly.
使飞机突然下降的向下气流或局部低气压地区。
Since last night, I've been suffering from a sudden decrease of hearing accompanied by vertigo.
从昨晚开始，我的听力突然下降，还伴有头晕。
They will swoop down on to the fields which men have cultivated and devour every kind of harvest.
它们会突然下降到人耕耘的田野上，吞吃每一种的收成。
The plane stalled suddenly.
那飞机突然失控下降.
All of a sudden,his confidence went up and mine went down.
突然，他的信心上来了，而我的却下降了。
and then plunged down as if from a spring-board:
然后就像从跳板上跳下来一样，突然降低：
Third, our monitoring over non-performing loans indicates that the amount has dropped continuously but not drastically.
第三，对不良贷款的监测表明，它是连续下降而不是突然降下来的；
The trading corporation was precipitated into ruin when the exchange rate dropped.
外汇率下降后，该贸易公司突然之间就破了产。
Suddenly you feel your sink rate increase and the canopy spins to the right.
突然地你感觉下降率增加且这伞向右旋转。
"a marked, often sudden, decline in status, rank, or importance"
"在地位、职位或重要性上显著地,通常突然的下降."
If import supplies of oil are suddenly curtailed, our national purchasing power will be lower.
如果石油的进口供应量突然减少，那么，我们的国民购买力就会下降。
They are asked to report any sharp rise or fall in the water table or if water bubbles in the well, becomes murky or changes in taste.
水位突然的上升或下降、水井冒泡、变浑或变味，他们都要报告。
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