Labra
n. (labrum的复数)外唇, 唇状边缘
🗣️ 情景例句
Hi, Susan.
嗨， Susan。
Whose pen is this?
这是谁的笔？
Rescue workers are therefore drilling a hole on the north side of the mine.
因此，营救人员在矿井的北侧钻了一个洞。