1
the polarity of sth
常与 of 连用，表示某物的极性。
The polarity of the battery is marked on the case.
电池的极性标记在外壳上。
极性
先理解核心含义，再看它在真实句子里的用法。
极性
the property of having an indicated pole, such as the distinction between positive and negative electric charges
The polarity of the battery is marked on the case.
电池的极性标记在外壳上。
多用于物理、化学，指正负电荷或磁极等的相对性质。
将某物分离或排列成两个相反的极。
The separation, alignment or orientation of something into two opposed poles.
此类属性中的两个极端之一。
Either of the two extremes of such attributes.
一个分子略带正电荷的一端与另一个或同一分子负电荷端之间的偶极-偶极分子间力。
The dipole-dipole intermolecular forces between the slightly positively-charged end of one molecule to the negative end of another or the same molecule. Wp
胚胎在囊胚中分成动物极和植物极的分化。
The division of an embryo into an animal pole and a vegetal pole within a blastula. Wp
Check the polarity of the battery before connecting the wires.
连接电线之前，检查电池的极性。
The magnet's polarity determines which end points north.
磁铁的极性决定哪一端指向北方。
Some fish can sense the polarity of electric fields in the water.
有些鱼能感知水中电场的极性。
常与 of 连用，表示某物的极性。
The polarity of the battery is marked on the case.
电池的极性标记在外壳上。
用于表示两种事物之间的对立或相反关系。
There is a clear polarity between the two parties.
两个政党之间存在着明显的截然对立。
复数形式为 polarities。
The polarities of the two magnets repel each other.
两块磁铁的极性相互排斥。
Not this
There are two polaritys: positive and negative.
Use this
There are two polarities: positive and negative.
中文名词没有复数变化，因此容易漏掉复数；但 polarity 在这里是可数名词，且以 -y 结尾，复数要变 y 为 i 再加 -es，所以 two 后要用 polarities。
Not this
The polarity among the two ends of the battery is different.
Use this
The polarity between the two ends of the battery is different.
between 用于两者之间，among 用于三者或以上；句中 the two ends 是两者，因此要用 between，不能用 among。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
磁极性
The compass needle responds to the Earth's magnetic polarity.
指南针指针会响应地球的磁极性。
电极性
Make sure the electrical polarity is correct before plugging in the device.
插入设备前请确保电极性正确。
相反极性
The two ends of a magnet have opposite polarity.
磁铁的两端具有相反的极性。
正极性
A positive polarity voltage is required to power the circuit.
该电路需要正极性电压才能供电。
负极性
The sensor detects a negative polarity input and turns off.
传感器检测到负极性输入后关闭。
极性反转
Scientists study polarity reversal in rock formations.
科学家研究岩层中的极性反转。
反转中子流的极性。
In the British sci-fi series Doctor Who, the Doctor famously says 'Reverse the polarity of the neutron flow' as a catchphrase, and fans often quote it to poke fun at technobabble.
在英国科幻剧《神秘博士》中，博士常说经典台词“反转中子流的极性”，粉丝也常引用这句话来调侃科技术语。
Use polarity naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想记忆：polar（两极的）+ ity → 极性；像磁铁有N极和S极，方向相反。
语域：formal 常见场景：科学教材、实验报告、技术手册 该词义多用于科学和技术语境，常见于物理、化学或电子学讨论，属于正式用语。日常口语中较少使用。
hilarity, popularity, regularity, clarity and charity all rhyme with polarity, sharing the stressed /ær/ sound and the final /əti/ ending (spelled '-arity'). Note that clarity and charity stress the first syllable, while the others stress the '-ar-' syllable, but the rhyme remains the same. Beware of polarize: it shares the 'polar' spelling but ends in /raɪz/, not /rəti/.
Dictionary facts from ECDICT, WIKTIONARY.