逐词背单词_轻松背单词

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逐词背单词扩展级

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nipple [ˈnɪpl]

基本释义：n.牛奶瓶的奶嘴，乳头
英英释义：the dark part of the skin which sticks out from the breast of a mammal and through which milk is supplied to the young

参考例句：

1. The nipple is surrounded by pigmented circular skin called the areola.乳头周围颜色较深的部位称为乳晕。
2. Nipple inversion is quite common in normal breasts.乳头内陷在正常乳房中也很常见。

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