xià tiān / gàn huó / de / shí hou / ， / tā / cháng cháng / guāng chì / zhe / shàng shēn / ， / zhǐ / chuān / yī tiáo / duǎn kù / ， / fāng biàn / sàn rè / 。

夏天干活的时候，他常常光赤着上身，只穿一条短裤，方便散热。

When working in summer, he often works with his upper body stark naked, wearing only a pair of shorts to dissipate heat easily.