Tiān / qì / hěn / lěng / tā / jìn / wū / hòu / gǎn / jǐn / kuān / yī / jiě / dài / huàn / shàng / le / shuì / yī

天气很冷，他进屋后赶紧宽衣解带，换上了睡衣。

It was very cold, so after entering the room he quickly undressed and changed into pajamas.