?乳腺增生病
Mammals (formally Mammalia) are a class of vertebrate animals whose name is derived from their distinctive feature, mammary glands, with which they feed their young.
乳腺癌
乳腺瘘
乳腺增生
乳腺（mammary gland的复数形式）
galactophore??/??mamma lacteal gland
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