Umbos
n. 盾中心的浮雕；殼嘴；鼓膜凸 (umbo的變形)
??? 情景例句
What sort of experience do you have?
你有什么樣的經歷？
Fifty-litre carboy would be the most economical size. Carboys may be retained without charge for two months.
50升的瓶子應是最經濟的尺碼，這些瓶子可免費保存兩個月。
At that moment Lucy came into the library.
正在那時候，露茜走進圖書館。