Penthrane
甲氧氟烷
🗣️ 情景例句
Ladies and gentlemen,
各位女士， 各位先生，
I've got a headache.
我头痛。
At last she said:There's nothing much wrong with you, but I'm afraid you have a problem.
“你没有什么大毛病，不过，恐怕你有个问题。