名词
中文翻译：乳腺
同义词：
['breast gland', 'mammary tissue']
例句：
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1.The mammary gland is responsible for producing milk and hormones in the female body.
乳腺负责在女性体内产生奶和激素。
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2.During pregnancy, the mammary gland enlarges to produce more milk for the baby.
怀孕期间，乳腺会增大以生产更多的奶供婴儿食用。
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3. Mammary glands are found in most animals, including humans, and are essential for reproductive functions.
乳腺是大多数动物，包括人类，生殖功能所必需的。