tā men / jié hūn / duō nián / yī zhí / méi yǒu / hái zi / jīng guò / jiǎn chá / cái / fā xiàn / shì / bù yù

他们结婚多年一直没有孩子，经过检查才发现是不育。

They had been married for years without having children, and only after examination did they discover it was infertility.