C2 adverb #17,000 最常用

areola

An areola is a small, circular area of colored skin, most commonly referring to the pigmented ring surrounding a human nipple. In biology, it can also describe a small space or pit on a surface, such as the area between the veins of a leaf or an insect's wing.

有帮助吗?
还没有评论。成为第一个分享想法的人!