Ostium
n. 口, 门, 孔\\n[医] 口, 门口
🗣️ 情景例句
Learning to express oneself well in an important part of education.
学会把意思表达清楚是受教育的一个重要方面。
Marry in lent, and you'll live to repent.
借债结婚，后悔一生。
Hello! Dad?
喂！爸爸？