名词
中文翻译：乳管
同义词：
['mammary duct', 'mammary cyst', 'mammary gland duct']
例句：
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1. The lacteal ducts are responsible for the transport of milk from the mammary gland to the udder.
乳管负责将乳汁从乳腺输送到乳房。
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2.The lacteal ducts are essential for the proper functioning of the mammary gland.
乳管对乳腺的正常功能至关重要。
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3. During pregnancy, the lacteal ducts expand to accommodate the growing fetus.
怀孕期间，乳管扩张以适应不断增长的胎儿。