Catalyst
[ 'k?t?l?st ]
公共 Public
n. <化>觸媒，催化劑;〈比喻〉觸發因素;促進因素;〈口〉有感染力的人;
?? 詞根助記
cata向下+lyst裂開，分解→分解下去→催化[劑]
?? 例句
The reaction takes place only in the presence of a catalyst.
只有在催化劑的作用下，反應才會發生。
There is actually a failure of the integral particle of the catalyst.
實際上存在有整粒催化劑的破碎。
The catalyst is subjected to a uniform ram pressure.
催化劑承受均勻活塞壓力。
Activated charcoal is known to be an excellent catalyst for many reactions.
已知活性炭對很多反應是一種極好的催化劑。
?? 聯想助記
【記】※ cata-前綴“下”,lyst-least少:沉淀到下面,量很小的東西→催化劑
※ catalogue-目錄,catalyst-催化劑:要按目錄加入催化劑,反應才能加速
? 同義詞
?? 詞根
cata-表示“下”
?? 牛津釋義
catalyst
n
1 substance that speeds up a chemical reaction without itself changing 催化劑; 觸媒劑.
2 (fig 比喻) person or thing that causes a change 促使變化的人或事物
The offer of a new job provided just the catalyst she needed. 這份新工作正是她所需要轉變的契機.
?? 擴展釋義
n. 觸媒, 接觸劑, 催化劑, 刺激因素, 促進因素【計】 催化劑【化】 催化劑【醫】 催化劑
?? 醫學釋義
①接觸器 ②催化劑
?? 同詞根單詞
?? 同為「博士」詞匯
查看全部博士詞匯 ›??? 情景例句
How about guests?
來賓呢？
A valiant man's look is more than a coward's sword.
勇士的神色勝過懦夫的刀劍。
I'm afraid that he'll forget it if he misses so many lessons. He may even fail his Chinese exam.
如果他再缺這么多課，恐怕他會忘記很多的。他的漢語考試甚至會不及格。