Umbo
n. 盾心的浮雕装饰, 壳顶, 鼓膜凸\\n[医] 突, 圆头
🗣️ 情景例句
How much does it cost?
这得花多少钱？
To play the guitar
弹吉他
How it came about that snakes manufactured poison is a mystery.
蛇是怎样产生毒液的，这是一个谜。