precipitate
[prɪˈsɪpɪˌtet]
vt.
下掷，由高处抛下;
使提前或突然发生;
[气象] 使凝结而下降;
[化]使沉淀;
vi.
[气象]凝结;
[化]沉淀;
倒落，一头栽下;
adj.
仓促行进的，匆促的;
轻率的，冲动行事的水蒸气，降水;
突然发生的;
n.
[化]沉淀物;
结果，产物;
例句:
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Adding sulphate to the solution will give a precipitate.
将硫酸盐加入该溶液会产生沉淀.
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A cool breeze caused a precipitate drop in the temperature.
冷风使温度急降.
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Clouds usually precipitate as rain or snow.
云常会凝结成雨或雪.
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How to tell which would form a precipitate?
来自BBC
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The precipitate of lead sulphide was filtered off.
来自Ld Rutherford
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Could talk of war precipitate the real thing?
来自BBC
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Rain precipitates.
突然下起了雨。
来自《权威词典》
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Crisis precipitated, as people expected.
正像预料的那样,危机一下子出现了。
来自《权威词典》