Radioactive vitamine b12
[化] 放射性维生素B12
🧩 词语组成解析
n. 维生素, 维他命
🗣️ 情景例句
It's John. Didn't you recognize my voice?
我是约翰。你没听出我的声音？
Let me introduce myself.
让我做个自我介绍吧。
But you said you'd come out to dinner with me. We fixed it.
但你说过你愿意出来和我共进晚餐的。我们已经决定了的。