M-l
[医][=Martin-Lewis(medium)]马丁-刘易斯（培养基）
🗣️ 情景例句
No, that's OK.
不，没关系。
I'm two years younger than my sister.
我比我姐小两岁。
The student did in an archway nearby where he could watch and hear everything that went on.
那个学生躲在附近一拱形的门廊里，在那儿可以看见、听到现场发生的一切。