Pejorate
v. (使)惡化,(使)變壞
??? 情景例句
You estimate his worth too highly.
你高估了他的價值。
Do not sell the bear's skin before you have caught the bear.
熊未到手休賣皮（勿過早樂觀）。
If explosives are used, vibrations will cause the roof of the mine to collapse.
如果用炸藥爆破，震動會引起礦頂塌落。