Protium
n. 三种氢的同位素中质量最轻者
🔁 扩展释义
【化】 氕【医】 氕(音撇)
🗣️ 情景例句
What classes are mandatory for your major?
你的专业什么课是必修的？
The purpose of this meeting is to discuss possible solutions for the pending issues.
本次会议的目的就是要讨论对悬而未解的问题的可能解决办法。
That's why we were getting anxious about you.
所以我们才为你们担心。