M. m.
[医] 粘膜
🗣️ 情景例句
I'm taking 19 credit hours.
我修了十九个学分。
What time are you going to get up tomorrow morning?
你将在明天早上什么时间起床？
There's something wrong woth your ears. I think there's something near us.
你的耳朵有点毛病！我想我们附近有什么东西。