Mastoidea
[醫] 乳突部(顳骨)
??? 情景例句
Which band of College English Test have you passed?
大學英語考試過了幾級？
If you can't remember, just try to guess.
假如你想不起來，就猜一猜看。
who rolled balls down inclined planes,
他就是那個使球體沿斜面向下滾動，