Mastoid cavity
[医] 乳突腔
🧩 词语组成解析
a. 乳头状的\\nn. 乳突
🗣️ 情景例句
Find a productive hobby, and see if you can learn something.
找一个具有意义的爱好，看你能否从中学到什么。
The best teacher one can have is necessity.
我们能得到的最好教师是“需要”。
he stooped to talk to a workman.After they had gone on,
途中，停下来与一个工人交谈，接着他们继续往前走去。