名词

1. 降水
Precipitation is rain, snow, or hail.

2. 沉淀；沉析
Precipitation is a process in a chemical reaction which causes solid particles to become separated from a liquid.

1. overly eager speed (and possible carelessness)

e.g. he soon regretted his haste

Synonym: hastehastinesshurryhurriedness

2. an unexpected acceleration or hastening

e.g. he is responsible for the precipitation of his own demise

3. the act of casting down or falling headlong from a height

4. the falling to earth of any form of water (rain or snow or hail or sleet or mist)

Synonym: downfall

5. the process of forming a chemical precipitate

6. the quantity of water falling to earth at a specific place within a specified period of time

e.g. the storm brought several inches of precipitation