precipitation

• 名词，指任何形式的降水，如雨、雪、雨夹雪或冰雹，从大气降落到地球表面；在化学中也指从溶液中析出固体的过程，或指突然、仓促、轻率的行动。

A noun referring to any form of water, such as rain, snow, sleet, or hail, that falls from the atmosphere to the Earth's surface; it can also refer to the process of forming a solid from a solution in chemistry, or to a sudden, hasty, or headlong action.

不可数

1. Meteorological phenomenonB1formalscientific

   Any form of water, such as rain, snow, sleet, or hail, that falls from the atmosphere to the Earth's surface.

   降水

   • The forecast predicts heavy precipitation for the weekend.
   • Precipitation levels in the desert are extremely low.
   • Snow is a common form of precipitation in mountainous regions.

   同义词rainfall

2. Measured quantityB2formalscientific

   The amount of water that falls to the ground in a specific location over a given period.

   降水量

   • The annual precipitation in this region is about 500 millimeters.
   • Meteorologists recorded the highest precipitation in decades.
   • The precipitation data helps farmers plan their crops.

3. Chemical processC1formalscientific

   The process of forming a solid substance from a solution during a chemical reaction.

   沉淀

   • The precipitation of salt occurs when the solution becomes supersaturated.
   • In the lab, we observed the precipitation of a white powder.
   • Chemical precipitation is used to remove impurities from water.

4. Headlong fallC2formal

   The act of falling or being thrown downward from a height.

   坠落

   • The precipitation of the climber from the cliff was tragic.
   • In the story, the hero's precipitation into the abyss was dramatic.
   • The accident involved a sudden precipitation from the scaffolding.

   同义词descentdivedownfalldropfallnosediveplungetumble

5. Hasty actionC2formal

   An unexpected acceleration or hastening of events, often without careful thought.

   仓促

   • The precipitation of the decision led to many mistakes.
   • His precipitation in signing the contract was unwise.
   • The precipitation of the project's launch caused delays.

   同义词abruptnesshastehastinessimpetuosityprecipitancyprecipitatenessrashnessrecklessnessrush

   反义词cautiondeliberationhesitationprudence

6. Excessive speedC2formal

   Overly eager or careless speed in doing something.

   草率

   • She acted with precipitation, not considering the consequences.
   • The precipitation of his actions worried his colleagues.
   • Avoid precipitation when making important financial decisions.

   同义词hastehastinesshurryimpetuosityprecipitancyrashnessrecklessness

   反义词carecautiondeliberationslowness