catalyst
美音:[´kætələst
]
英音:[´kætələst
]
n.催化剂
难易程度:
catalyst为短语/超纲词汇
词根
cata-=down,downwards,fully 变化型 cat-
catalyst
/'kætəlɪst; `kætlɪst/
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.
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.
catalyst
n[C]
[Date: 1900-2000; Origin: catalysis, on the model of analyst]
technical a substance that makes a chemical reaction happen more quickly without being changed itself
something or someone that causes an important change or event to happen
catalyst for
They hope his election will act as a catalyst for reform.
>catalytic [,kætl'ɪtɪk/
[Date: 1900-2000; Origin: catalysis, on the model of analyst]
technical a substance that makes a chemical reaction happen more quickly without being changed itself
something or someone that causes an important change or event to happen
catalyst for
They hope his election will act as a catalyst for reform.
>catalytic [,kætl'ɪtɪk/
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