坍落度的英文：
slump constant
v. 下跌；衰落；下降；（使）倒下
n. 骤降，猛跌，锐减；萧条期；衰退
- She slumped into a chair.
她轰然倒在了椅子上。 - Gill was dwelling on the consequences of the slump.
吉尔一直在考虑这衰退的后果。 - Net profits slumped by 41%.
净利润暴跌了41%。 - The slump in global manufacturing seems to be easing.
全球制造业的衰退似乎也正在减缓。 - If the slump continues, more men will be stood off.
如果经济萧条持续下去，将有更多的人被解雇。
adj. 固定的；不停的，接连不断的
n. 常数；不变的事物
- Matter is in constant motion and constant change.
物质总是在不断运动，不断变化的。 - A constant guest is never welcome
常客令人厌 - The market is in a constant state of flux.
市场行情在不断变化。 - The market is a stream that is in constant motion.
市场像河流一样不断地波动。 - The speed of light is an invariant constant.
光速是一个不变常数。
