catalyst

美 { "us": "", "uk": "" }
英 { "us": "", "uk": "" }
数据源: ai_enrichment
催化剂是一种能加速化学反应而不被消耗的物质,也比喻能促进变化或发展的关键因素。

用法要点

句型搭配

常用作可数名词,在句子中作主语或宾语,常与介词for或of连用表示作用对象。

• act as a catalyst
• serve as a catalyst
• be a catalyst for change

介词用法

主要与介词for或of搭配,表示催化剂所促进的对象或领域,for更强调目的或结果,of更强调所属关系。

• catalyst for growth
• catalyst of innovation
• catalyst in the process

语域说明

在化学领域指具体物质,在社会科学、商业等领域用作比喻义,指引发变化的因素,属正式用语。

• chemical catalyst
• economic catalyst
• social catalyst

基础例句

The new policy acted as a catalyst for economic growth in the region.

这项新政策成为该地区经济增长的催化剂。

Her speech served as a catalyst for the community to take action.

她的演讲促使社区采取行动,起到了催化剂的作用。

The meeting was a catalyst for positive changes in our team.

这次会议是我们团队发生积极变化的催化剂。

高级例句

The enzyme functions as a biological catalyst, accelerating metabolic reactions without being consumed.

这种酶作为生物催化剂,在不被消耗的情况下加速代谢反应。

Technological innovation has been a key catalyst for industrial transformation in the 21st century.

技术创新已成为21世纪产业转型的关键催化剂。

The financial crisis served as a catalyst for regulatory reforms in the banking sector.

金融危机成为银行业监管改革的催化剂。

高频搭配

verb

act asserve asbebecomefunction asprovide

adjective

importantkeymajorpowerfuleffectivechemicaleconomic

noun

changegrowthinnovationdevelopmentreactionreform

preposition

forofin

phrase

catalyst for changecatalyst of growthact as a catalystserve as a catalyst

常见错误

❌ 错误:He is a catalyst to make the project successful.
✓ 正确:He was a catalyst for the project's success.

错误用法中使用了不定式to make,但catalyst通常与介词for或of搭配表示作用对象,应改为for the project's success更自然。

❌ 错误:The catalyst is used to speed the reaction.
✓ 正确:The catalyst speeds up the reaction.

错误用法中使用了is used to,但catalyst本身就有加速作用,直接说speeds up更简洁准确,避免冗余。

近义词辨析

trigger

trigger强调直接引发事件或反应,常指突然的启动点;catalyst更侧重于促进过程或变化,可能涉及持续作用。

The incident was the trigger for the protest (直接引发), while the new law acted as a catalyst for social reform (促进长期变化)。

stimulus

stimulus指外部刺激物,能激发反应或活动,范围较广;catalyst特指能加速或促进变化的关键因素,更具比喻性。

Tax cuts provided a stimulus to the economy (外部激励), whereas innovation was the catalyst for industrial growth (核心促进因素)。