Quadrupole
[化] 四极
🗣️ 情景例句
What a beautiful day!
今天的天气真好！
She seems to have no principles at all when it is a question of making money.
一碰到挣钱的事，她就好像完全不顾自己的人格了。
Once a year, a race is held for old cars.
旧式汽车的比赛每年举行一次。