名词
中文翻译：联合乳头
同义词：
['nipple', 'teat', 'mammary gland']
例句：
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1. The baby's nipple is so soft and warm that it makes the mother feel comforted.
宝宝的乳头如此柔软温暖，让母亲感到安慰。
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2. The nipple of a cow is shaped like a cup, which helps milk flow from the mammary glandinto the teat.
牛的乳头形状像杯，有助于乳汁从乳腺流入乳头。
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3.The nipple of the newborn baby is sensitive to touch, making it important for caregivers to be gentle when nursing.
新生儿的乳头对触摸敏感，因此护理人员在喂奶时要温柔。