音标：['kætәlist] ；柯林斯词典等级：1 级；

n. 触媒, 接触剂, 催化剂, 刺激因素, 促进因素
[计] 催化剂

n. (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
n. something that causes an important event to happen

词型变化：名词复数形式 : catalysts
考试类型：[六级/托福/IELTS/GRE]

词性分布：

名词100%

catalyst的用法和样例：

例句

用作名词(n.)

War is a catalyst to help them to choose.战争是一副催化剂来帮助他们选择。
Debate is the best catalyst of thought.争论是思想最好的催化剂。
This tragedy will be a catalyst for good.这场悲剧会是美好的催化剂。
The results were then used to make better car catalyst.这一研究的成果可随后用于生产出效果更好的汽车催化剂。
The offer of a new job provided just the catalyst she needed.这份新工作正是她所需要转变的契机。

词汇搭配

catalyst poisoning催化剂中毒
catalyst accelerator助催化器剂,催化加速...
fluid catalyst流化状态的催化剂...
negative catalyst负催化剂
catalyst cracker催化裂化设备...
contact catalyst接触催化剂
oxidation catalyst氧化催化剂
catalyst deterioration催化剂中毒
chlorination catalyst氯化催化剂
catalyst fines催化剂粉末
catalyst reactivation催化剂再生
decomposition catalyst分解催化剂,由分解得...
catalyst bed催化剂床
catalyst poison催化剂毒物
catalyst chamber催化剂室
nickel catalyst镍催化剂
impregnation catalyst浸渍催化, 浸染催化...
combustion catalyst燃烧催化剂
organic catalyst有机催化剂
catalyst activity[化] 催化剂活性...

【近义词】

chemical agent【军】化学战剂，化学试剂...
substance实质
compound化合物
reagent试药
catalytic agent催化剂
promoter促进者
spur支脉
facilitator帮助者
stimulus刺激
incentive刺激的
goad刺激
spark闪烁
accelerator加速装置

【反义词】

anticatalyst反催化剂

SSS 2008-12-31

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Its the time of year to take a look backand thats just what the journal Science did as they listed their most important breakthroughs of 2008. At the v

发表于:2018-12-02 / 阅读(96) / 评论(0)

Scientific American(十二)月

巧解GRE填空的两个小技巧

为实现自己的留学之梦，无数学生默默地在GRE考试中付出自己辛勤的汗水。所有GRE高分故事背后都有值得我们学习的GRE备考经验。相信这样的一个个GRE高分故事能够在你备考GRE考试的过程中送

发表于:2019-01-03 / 阅读(215) / 评论(0)

GRE英语

SSS 2008-08-01

This is Scientific Americans 60-Second Science. I am Cynthia Graber. This will just take a minute. Solar panels typically convert sunlight into electricity or heat. But photosynthetic vegetation converts sunlight into chemical energy. Now M.I.T.s Dan

发表于:2019-01-04 / 阅读(91) / 评论(0)

Scientific American(八)月

SCIENCE IN THE NEWS #2115 - Digest

12 科技新闻摘要（一） DATE=3-13-01 TITLE=SCIENCE IN THE NEWS #2115 - Digest BYLINE=Staff VOICE ONE: This is Bob Doughty. VOICE TWO: And this is Sarah Long with Science in the News, a VOA Spec

发表于:2019-01-07 / 阅读(47) / 评论(0)

科技之光

大学双语美文：孩子教会我的快乐

Every morning my daughter and I go for a twenty-minute walk to my workplace. For me, in those twenty minutes, Im in transit. For my toddler, its nothing less than a parade of flowers, fire trucks, pebbles, and friendly folk. 每天清晨，我的女儿

发表于:2019-01-08 / 阅读(69) / 评论(0)

阅读空间

VOA标准英语2011-'Born Free' Reflects Organic Blues-Based

Kid Rock describes his latest album, Born Free, as organic blues-based rock and roll. Born Free is Kid Rock's first new album in more than three years. He left the comforts of his home studio in Detroit, Michigan to record the collection in Los Angel

发表于:2019-01-14 / 阅读(89) / 评论(0)

VOA标准英语2011年(一月)

职场晋升真的男女平等吗

职场晋升真的男女平等吗 A study shows a large gap in perceptions among the sexes in who has more opportunities for advancement -- men or women. 职场中男性与女性谁有更多的晋升机会？一项针对该话题的调研显示，男士

发表于:2019-01-15 / 阅读(81) / 评论(0)

实用英语

9/11 Proves a Catalyst for NGOs to Help Those Affected by the Tragedy

It's been 10 years now since the attacks on September 11, 2001 that killed thousands in America. For families and friends of those killed, the pain is still raw. However, the tragedy has proved a catalyst for one organization to rise out of the rubbl

发表于:2019-01-19 / 阅读(85) / 评论(0)

世界各地新闻集锦

GRE填空解题攻略流程

GRE频道为各位考生整理了带你领略GRE填空解题流程，供考生们参考使用，更多GRE辅导请继续关注新东方网GRE频道。 1.逻辑关系 GRE填空考察的就是整体逻辑语言的能力，考生的任务就是找出句子

发表于:2019-02-01 / 阅读(93) / 评论(0)

GRE英语

十年人生“杯洗具”

在即将挥别过去十年之际，试问中国最流行的网络语录是哪一句?相信很多人都会提到人生就是一个杯子，而它是杯具还是洗具，全由你自己选择。 What are Chinas most popular online slang terms as we ap

发表于:2019-02-01 / 阅读(80) / 评论(0)

英文语法词汇

职业女性为何止步公司中层？

Why do so many working moms careers stall out when they hit middle management? Disagreement over the answer has often sparked hot debate. 为什么很多上班妈妈当上中层管理人员后其职业生涯就陷入停滞？对这个问题的不同回

发表于:2019-02-18 / 阅读(57) / 评论(0)

实用英语

信息安全软件展会上吸引眼球

Recent internet mishaps that victimized giant online service providers Alipay and Ctrip have again sparked concerns over information security in China. Chen Wei from the Ministry of Industry and Information Technology calls on the country's software

发表于:2019-02-18 / 阅读(42) / 评论(0)

英语新闻

中国发布制造强国10年纲领

According to a notice issued Tuesday by the State Council, Premier Li Keqiang authorized the plan named Made in China 2025, which is the roadmap for the future of the manufacturing sector in China. The plan is based on a national research project joi

发表于:2019-02-18 / 阅读(37) / 评论(0)

英语新闻

缤纷的咖啡文化（图）

Give me a decaf triple vente, 2 pump vanilla, non-fatm extra hot, stirred, no foam caramel macchiato with whip cream and caramel sauce top and bottom. 给我一杯热的、无咖啡因和泡沫的香草糖浆脱脂加奶油浓缩式焦糖玛奇朵咖啡

发表于:2019-02-18 / 阅读(82) / 评论(0)

阅读空间

咖啡文化——五彩缤纷

发表于:2019-02-18 / 阅读(223) / 评论(0)

阅读空间

How Well Are You Performing in Your Different Roles?

How Well Are You Performing in Your Different Roles? Each day, you play a number of different roles in both your professional and your personal life. Your professional world is a large part of what you do but if youre striving for excellence in this

发表于:2019-02-20 / 阅读(44) / 评论(0)

阅读空间

TED演讲:内心的喧哗(2)

I was referred to a psychiatrist, who likewise took a grim view of the voice's presence, 我被转介给精神科医生，有声音这件事被很严肃地看待 subsequently interpreting everything I said through a lens of latent insanity. 所以接着

发表于:2019-02-21 / 阅读(44) / 评论(0)

TED演讲教育篇

Vietnam's Move to Publish Earnings Hailed

HANOI - Mired by mismanagement and debt, state-owned enterprises are the bane of the Vietnamese economy. But a recent move to publicize earnings is being hailed as a revolutionary step towards reform. When Vietnamese police issued an arrest warrant f

发表于:2019-02-21 / 阅读(89) / 评论(0)

英语新闻

生活中会碰到的GRE词汇总结

近日刚开始背GRE单词，闲来无事，随便总结总结，看到这些单词感觉很放松，没觉得它们是GRE单词，特与大家分享，希望大家喜欢！！夏利（汽车）Charade （charade n.看手势猜字谜游戏）--bump

发表于:2019-02-25 / 阅读(81) / 评论(0)

GRE英语

TED演讲:科技为人道主义带来的变化

The humanitarian model has barely changed since the early 20th century. 人道主义的模型自从20世纪初期就几乎没有改变过 Its origins are firmly rooted in the analog age. 它的起源在模拟时代就根深蒂固了 And there is a ma

发表于:2019-03-04 / 阅读(101) / 评论(0)

TED演讲教育篇

最新学习文章

热门学习文章

热门标签

英语听力 VOA标准英语 VOA 英语歌曲口语听力提高听力材料听力教程英语学习 NPR 英语口语 VOA慢速英语美国国家电台儿童英语 VOA英语小学英语 cnn VOA常速英语标准英语英文歌曲听电影学英语英语单词英文电影慢速英语 CRI 美联社新闻美国有线新闻加州分级澳洲新闻流行歌曲常速英语 ABC新闻快递疯狂英语英语读物听力棚车少年经济学人英语词汇商务英语 VOA双语新闻 BBC 中国电台大学英语 Treasures 加州语文 BBC英语英语听力网站 VOA英语教学词汇万花筒 SSS VOA英语听力 AP 新概念分级英语英语广播听力精选英语播客英文绘本 TED演讲赖世雄英语MP3 CCTV9英语新闻 lesson 英语新闻初中英语学英语英语语法历史上的今天英文广播剧英语游戏原版英语小说英语有声读物书虫英语牛津英语读物访谈录新闻一分钟考研英语英语每日在线听新闻 Us 新概念英语地道英语单词第二册自然百科高中英语 sports 实用英语 MP3听力辛沛沛 ESL英语第一册英语每日一句 unit 新东方 GRE 每日一词 BBC听力

学英语单词