名词
中文翻译：射精管
同义词：
['seminal vesicle', 'seminal receptacle', 'seminal duct']
例句：
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1. The spermatic calculus is a common cause of urinary tract infections.
射精管是尿路感染的常见原因。
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2. During sexual intercourse, the spermatic calculus plays an important role in fertilization.
在性交过程中，射精管在受精中起着重要作用。
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3. The spermatic calculus is a small tube that connects the testes to the urethra.
射精管是连接睾丸和尿道的小管道。