M. m.
[医] 粘膜
🗣️ 情景例句
I do have an answer, Philip.
我确实有一个答案， Philip。
Guess how old I am.
猜测我有多大。
The winning car reached a speed of forty miles an hour -- much faster than any of its rivals.
获胜的那辆车达到了时速40英里--远远超过任何对手。