Deutohydrogen
[医] 氘(音刀), 重氢
🗣️ 情景例句
You had better study hard.
你最好努力学习。
She is free any time you need help.
你需要帮忙时，请随时向她求助好了。
Well, I'm afraid we have to go now.
哦，恐怕我们现在得走了。