Umbilicomammillary triangle
[医] 脐乳头三角
🧩 词语组成解析
🗣️ 情景例句
to ask Dad to sign as a guarantor.
请爸爸当担保人为我签字。
He was so angry, he began to jump and down.
他愤怒得开始顿足。
You are John Smith, the engineer,aren't you?
你是工程师约翰。史密斯，对吗？