Word · Frequency #6303
ion
离子
核心释义
an atom or group of atoms that has an electric charge because it has lost or gained electrons
- 1.
带电荷的原子或原子团,如盐溶液中的钠原子和氯原子
An atom or group of atoms bearing an electrical charge, such as the sodium and chlorine atoms in a salt solution.
- 2.
带电的粒子(正或负)；失去或得到一个或多个电子的原子、分子或基团
a particle that is electrically charged (positive or negative); an atom or molecule or group that has lost or gained one or more electrons
带电荷的原子或原子团,如盐溶液中的钠原子和氯原子；带电的粒子(正或负)；失去或得到一个或多个电子的原子、分子或基团；离子；[化] 离子
用法In use
When salt dissolves in water, it breaks into positive and negative ions.
用法提示：ion 作名词，表示带电的原子或原子团，此处用复数形式 ions。
The battery works by moving ions from one electrode to the other.
用法提示：ion 是名词，指带电粒子，句中用复数 ions 表示多个离子。
Each ion in the solution carries either a positive or a negative charge.
用法提示：ion 为名词，指带电荷的原子或原子团，此处用单数形式。
positive/negative ion
离子可带正电或负电。
A positive ion is called a cation.
正离子被称为阳离子。
ion exchange
常见于化学处理过程。
相关词与表达Connections
搭配Collocations
- positive ion
- 正离子
- Positive ions are attracted to the negative electrode.正离子被吸引到负极。
- negative ion
- 负离子
- Negative ions can improve air quality.负离子可以改善空气质量。
- ion channel
- 离子通道
- Ion channels play a key role in nerve signal transmission.离子通道在神经信号传递中起关键作用。
- ion exchange
- 离子交换
- Ion exchange is used to soften hard water.离子交换用于软化硬水。
- ion beam
- 离子束
学习提示Learner notes
记忆技巧Memory Tip
音似爱嗯，想象一个带电原子开着电。
语境与语域Context & Register
register: formal; contexts: chemistry, physics, biology; note_zh: 离子是科学术语，多用于化学、物理等科学领域。
语法说明Grammar Note
复数形式直接加 -s：ions。
发音与拼写Pronunciation & Spelling
Lion and scion rhyme exactly with ion (same stressed vowel /aɪ/ and ending /ən/). Anion and cation share the same spelling ending but are pronounced with initial stress and do not rhyme with ion.
用法优先级Usage priority
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
一起学习词形
Dictionary facts from ECDICT, WIKTIONARY.