Tiān / qì / tū / rán / biàn / lěng / le / tā / chuān / shàng / le / yí / jiàn / hòu / hòu / de / pài / kè / dà / yī天气突然变冷了,他穿上了一件厚厚的派克大衣。The weather suddenly turned cold, so he put on a thick parka.