Tuì / xiū / hòu / tā / men / zài / lǚ / xíng / zhōng / kāi / shǐ / le / yí / duàn / xī / yáng / liàn

退休后，他们在旅行中开始了一段夕阳恋。

After retiring, they began a romance in their later years while traveling.