Word · Frequency #13487
activators
活化剂；激活剂
activators is the plural of activator.
核心释义
生化语境中指增强酶活性或促进基因转录的分子；不是催化剂（catalyst）。
a substance or agent that causes activation, especially a molecule that increases enzyme activity or a protein that increases gene transcription
- 1.
激活者或激活物。
One who, or that which, activates.
- 2.
通过提高转录速率来调控一个或多个基因的化学物质或试剂。
Any chemical or agent which regulates one or more genes by increasing the rate of transcription.
- 3.
一种增加酶介导反应速率的效应物。
A type of effector that increases the rate of enzyme-mediated reactions.
- 4.
一种用于磷光体和闪烁体的掺杂剂。
A type of dopant used in phosphors and scintillators.
- 5.
一种使矿物得以浮选的药剂。
An agent that enables the flotation of a mineral or minerals.
- 6.
一种手持设备,向关节、肌肉等施加受控的快速推力,以帮助刺激神经系统活动。
A hand-held device that delivers a controlled fast thrust to a joint, muscle, etc., to help stimulate nervous system activity.
激活者或激活物。；通过提高转录速率来调控一个或多个基因的化学物质或试剂。；一种增加酶介导反应速率的效应物。；一种用于磷光体和闪烁体的掺杂剂。；一种使矿物得以浮选的药剂。
用法In use
The enzyme needs an activator to start breaking down the sugar.
用法提示：activator 是名词，作宾语，表示引发或促进某种生化过程的“活化剂”。
Researchers added an activator to the cells to increase gene production.
用法提示：activator 是名词，作宾语，表示在基因转录中起激活作用的“激活剂”。
In developing embryos, these activators control when certain genes turn on.
用法提示：activator 的复数形式 activators 作主语，表示多个起激活作用的因子。
activator of sth
of 后接被激活或增强活性的对象。
These compounds are activators of the enzyme.
这些化合物是这种酶的活化剂。
serve as an activator
也常用 act as an activator，表示“充当激活剂”。
相关词与表达Connections
搭配Collocations
- enzyme activator
- 酶活化剂；酶激活剂
- This compound acts as an enzyme activator in the metabolic pathway.这种化合物在代谢途径中充当酶活化剂。
- transcription activator
- 转录激活因子
- The protein functions as a transcription activator that increases gene expression.这种蛋白质充当转录激活因子，提高基因表达。
- tissue plasminogen activator
- 组织纤溶酶原激活剂
- Doctors administered tissue plasminogen activator to dissolve the blood clot.医生给患者注射了组织纤溶酶原激活剂以溶解血栓。
- chemical activator
- 化学活化剂
- A chemical activator was added to speed up the reaction.加入了一种化学活化剂以加快反应。
学习提示Learner notes
记忆技巧Memory Tip
Act 是“行动”，-or 表“物/剂”；activator 就是让反应或基因“行动起来”的物质——活化剂。
语境与语域Context & Register
语域：formal 常见场景：科技文献、生物化学实验、分子生物学研究 该义项通常出现在科技文献或学术写作中，多用于描述酶、基因转录或化学反应中的活化剂；日常口语中较少使用。
发音与拼写Pronunciation & Spelling
None of these words rhymes with 'activator', because the stressed vowel /æ/ plus the following /ktɪveɪtə/ do not reappear. They are listed for the shared '-ator' spelling and the final /eɪtə/ sound. 'Elevator' is the closest in sound pattern; 'creator' is a useful lookalike but has stress on the second syllable, so do not copy its pronunciation when saying 'activator'.
一起学习词形Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.