precipitation
英 [prɪ,sɪpɪ'teɪʃ(ə)n]
美[prɪ'sɪpə'teʃən]
	    - n. [化学] 沉淀,[化学] 沉淀物;冰雹;坠落;鲁莽
 
英英释意
- 1. the quantity of water falling to earth at a specific place within a specified period of time;
 - "the storm brought several inches of precipitation"
 
- 2. the process of forming a chemical precipitate
 
- 3. the falling to earth of any form of water (rain or snow or hail or sleet or mist)
 
- 4. the act of casting down or falling headlong from a height
 
- 5. an unexpected acceleration or hastening;
 - "he is responsible for the precipitation of his own demise"
 
- 6. overly eager speed (and possible carelessness);
 - "he soon regretted his haste"