Compacta
[医]（蜕膜）致密层
🗣️ 情景例句
When is check-out time?
什么时候必须结帐和离开宾馆？
A person must strain one's ears to hear a wild animal in the forest.
在森林里，人类必须对野兽竖起耳朵才行。
He struck his attacker on the ear.
他打了那个攻击者一耳光。