Parity conservation
[化] 宇称守恒
🧩 词语组成解析
🗣️ 情景例句
The other day he finally popped the question.
第二天他终于开口求婚了。
Cheek brings success.
和气生财。
but Captain Fawcett did not take him because the trip was too dangerous.
弗西特机长之所以不送他去，是因为那段飞行太危险了。