Mamillation
乳头形成
🗣️ 情景例句
Yes, indeed.
是的 ，原来如此。
While Mike was an only child, he would amuse himself with his toys.
麦克还在孩提时，常常独自玩玩具取乐。
Why? English is the first language in none of these countries.
为什么？在这些国家中英语都不是第一语言。