shū / jīng / guǎn / zǔ / sè / shì / dǎo / zhì / nán / xìng / bù / yù / de / cháng / jiàn / yuán / yīn / zhī / yī / 。

输精管阻塞是导致男性不育的常见原因之一。

Obstruction of the vas deferens is one of the common causes of male infertility.