名词
中文翻译：Unknown
同义词：
['genital sac', 'reproductive sac']
例句：
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1.The genital capsule is a protective structure that surrounds the testes and contains sperm.
生殖囊是一个包围睾丸并包含精子的保护结构。
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2. During sexual intercourse, the genital capsule is inflated to facilitate penetration.
性交时，生殖囊膨胀以便于插入。
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3.In some species, the genital capsule can be used as a storage organ for eggs or sperm.
在一些物种中，生殖囊可以用作储存卵子或精子的器官。