xià / wǔ / kāi / huì / de / shí / hòu / ， / tā / tài / lèi / le / ， / rěn / bú / zhù / dǎ / kē / shuì / 。

下午开会的时候，他太累了，忍不住打瞌睡。

He was so tired during the afternoon meeting that he couldn't help dozing off.