Radioactive hydrogen
[医] 放射性氢
🧩 词语组成解析
🗣️ 情景例句
Keep a small English dictionary with you at all time.
随身携带一本小英文字典。
Praise no man till he is dead.
盖棺论定。
You have to learn when to ask for help and when to ask for information.
你得学会什么时候请求帮助，什么时候打听信息。