Sectiones isthmi
[医] 峡切面
🧩 词语组成解析
[医] 切面
（单isthmus）峡
🗣️ 情景例句
I major in English and minor in French.
我主修英语，副修法语。
He's been everywhere.
他到处都去过了。
Suddenly, they heard a voice behind them.
突然他们听到身后有声音。