Parity conservation
[化] 宇称守恒
🧩 词语组成解析
🗣️ 情景例句
I was wondering if you could help me. I'd like to know.
不知道你能否帮助我，我想知道。
If one desires to succeed in anything, he must pay the price.
如果想做成点事，就得付出代价一干。
An even harder situation is to be on the platform in good time for a train and still to see it go off without you.
更难堪的情况是虽然及时赶到站台上，却眼睁睁地看着那趟火车启动，把你抛下。