好词典

precipitates

UK /prɪˈsɪpɪteɪts/US /prɪˈsɪpɪteɪts/

词源

源自拉丁语 'praecipitare',意为'抛下'或'使突然落下',由 'prae-'(前)和 'caput'(头)组成,字面意思是'头朝下'。

verb

❶ 使突然发生或加速某事的进程,通常指不好的事情突然发生。

“The economic crisis precipitated widespread unemployment.”

(经济危机突然导致了大规模的失业。)

“His careless remarks precipitated a heated argument.”

(他轻率的言论引发了一场激烈的争论。)

❶ 在化学中,指固体从溶液中析出或沉淀的过程。

“Adding salt to the solution precipitates the formation of crystals.”

(向溶液中加盐会导致晶体析出。)

“The chemical reaction precipitated a white powder at the bottom of the beaker.”

(化学反应使烧杯底部沉淀出白色粉末。)

同义词:trigger, cause, hasten, accelerate, induce

noun

❶ 化学中从溶液中析出的固体物质,即沉淀物。

“The white precipitate at the bottom of the test tube was collected for analysis.”

(试管底部的白色沉淀物被收集起来用于分析。)

“After filtration, the precipitate was dried and weighed.”

(过滤后,沉淀物被干燥并称重。)

同义词:sediment, deposit, residue, solid

常见短语

precipitate into — 指某种情况突然转变为另一种状态,通常带有负面含义。

“The peaceful protest precipitated into violence after the police intervention.”

(和平抗议在警方干预后突然演变为暴力事件。)

precipitate out — 化学术语,指物质从溶液中析出形成沉淀。

“When the solution was cooled, the salt began to precipitate out.”

(当溶液冷却时,盐开始析出形成沉淀。)