棉背心

chē fū yǐ jīng ràng kāi dào dàn tā de pò mián bèi xīn méi yǒu shàng kòu

车夫已经让开道，但他的破棉背心没有上扣。

The runner had already moved to the side, but he tattered waistcoat was not done up.