precipitation
/priːˌsɪp.əˈteɪ.ʃən/
名词
（尤指雨或雪的）降落；降水
Hail and sleet are types of precipitation.
冰雹和冻雨都是降水形式。
急躁，冲动
The prime minister has been accused of acting with precipitation over the crisis.
总理被指责在处理危机问题上贸然行动。
沉淀物，析出物质
The compound is finally obtained by precipitation.
最终通过沉淀反应获得化合物。