Methylcobalamin
甲基维生素B12
🗣️ 情景例句
I don't like watching this show at all.
我一点也不喜欢看这场表演。
How long has it been since you've heard from your uncle?
自从你听到叔叔的消息有多长时间了？
'A fire extinguisher, my dear,' answered the Ambassador drily.
“灭火器弄的，亲爱的，”大使冷冷地回答，