zhè / duì / fū / qī / yīn / wèi / wú / fǎ / zì / rán / shēng / yù / jué / dìng / tōng / guò / dài / yùn / yào / yí / gè / hái / zi

这对夫妻因为无法自然生育，决定通过代孕要一个孩子。

Because they could not conceive naturally, the couple decided to have a child through surrogacy.