Once the sperm cells have emerged from the collection tube, they enter a shorter and rather straight tube called vas deferens (plural: vasa deferentia).是什么意思_Once the sperm cells have emerged from the collection tube, they enter a shorter and rather straight tube called vas deferens (plural: vasa deferentia).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句