Methylphenanthrene
甲菲
🗣️ 情景例句
He'll be back soon.
他很快就回来。
Do you have a phone book(directory)?
你有电话簿吗？
Oh dear! You mean I'm too fat? That is a problem! said Mrs Brown.
“天哪！你的意思是说我太胖了吧？这是个问题！”布朗夫人说