Catalyst
[ 'kætəlɪst ]
公共 Public
n. <化>触媒，催化剂;〈比喻〉触发因素;促进因素;〈口〉有感染力的人;
💡 词根助记
cata向下+lyst裂开，分解→分解下去→催化[剂]
📝 例句
The reaction takes place only in the presence of a catalyst.
只有在催化剂的作用下，反应才会发生。
There is actually a failure of the integral particle of the catalyst.
实际上存在有整粒催化剂的破碎。
The catalyst is subjected to a uniform ram pressure.
催化剂承受均匀活塞压力。
Activated charcoal is known to be an excellent catalyst for many reactions.
已知活性炭对很多反应是一种极好的催化剂。
🌱 联想助记
【记】※ cata-前缀“下”,lyst-least少:沉淀到下面,量很小的东西→催化剂
※ catalogue-目录,catalyst-催化剂:要按目录加入催化剂,反应才能加速
✅ 同义词
🔤 词根
cata-表示“下”
📖 牛津释义
catalyst
n
1 substance that speeds up a chemical reaction without itself changing 催化剂; 触媒剂.
2 (fig 比喻) person or thing that causes a change 促使变化的人或事物
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.
🔁 扩展释义
n. 触媒, 接触剂, 催化剂, 刺激因素, 促进因素【计】 催化剂【化】 催化剂【医】 催化剂
🏥 医学释义
①接触器 ②催化剂
🌿 同词根单词
📖 同为「博士」词汇
查看全部博士词汇 ›🗣️ 情景例句
Great. I believe you must care for his educations.
太好了。我相信你肯定很关心他的教育吧。
I wonder if the dentist could fit me in early tomorrow?
请问明天一早牙科医生能抽空给我看一下吗？
They quickly loaded a small rubber dinghy with food, matches, and cans of beer and rowed for a few miles across the Caribbean until they arrived at a tiny coral island.
他们迅速把食物、火柴、罐装啤酒往一只救生筏上装。然后在加勒比海上划行了几英里，到了一座珊瑚岛上。