Umbo
n. 盾心的浮雕装饰, 壳顶, 鼓膜凸\\n[医] 突, 圆头
🗣️ 情景例句
How's it going?
近况如何？
You have to be there half an hour before departure time.
你要在起飞前半小时到那里。
He told me to unpack my things and then come down to dinner.
他让我打开行装后下楼吃饭。