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
That can't be!
不可能！
The people at the party were worried about Janet because no one was aware of where she had gone.
参加聚会的人们都为珍妮物担心，因为没人知道她去哪里了。
There were hardly any trees on the island and there was no water, but this did not prove to be a problem.
岛上几乎没有一颗树，也没有淡水，但这不算什么问题。