vt.

1. 使突然發生；加速；促使
   Her remark precipitated my decision.

   她的話促使我作出決定。

2. 猛拋下；猛然摔下
3. 【化】使沉澱；使沉降
4. 【氣】使（水汽）凝結成雨（或雪等）
5. 使突然陷入，使陷於[（+into）]
   The company was precipitated into ruin when the exchange rate dropped.

   匯率下降時，公司一下子破了產。

vi.

1. 【化】沉澱
2. 【氣】（水汽）凝結成雨（或雪等）[（+as）]

a.

1. 突如其來的，突然的
2. 猛然落下（或摔下）的；猛衝的；流得很快的
3. 急躁的；魯莽的；倉卒的

n.[C]

1. 【化】沉澱物
2. 【氣】凝結物（如雨、雪等）

v.

1. cause (an undesirable event) to happen unexpectedly or prematurely.
2. cause to move suddenly and with force.
   ▸ (precipitate someone/thing into) send someone or something without warning into a particular state or condition.
3. Chemistry  cause (a substance) to be deposited in solid form from a solution.
   ▸cause (drops of moisture or particles of dust) to be deposited from the atmosphere or from a vapour or suspension.

adj.

n.