Polar contact
[电] 极接点
🧩 词语组成解析
contact
['kɑntækt]
n. 接触;触点;[医]（传染病）接触人;门路;
vt. 使接触;与…联系;与…通讯（或通话）;
vi. 联系，接触;
con共同+tact接触→共同接触 → 接触；联系
🗣️ 情景例句
His appearance is impressive.
他的外表给人印象深刻。
The speaker kept wandering off.
演讲的那个人老是走题。
A fine rain began to fall on our heads and the temperature had dropped.
一阵小雨落到我们头上，气温开始下降了。