热膨胀 rèpéngzhàng thermal expansion Origin Definitions Defs Strokes Stroke Words Sentences Sents 1 sentence 所有金属遇热膨胀，遇冷收缩。 suǒyǒu jīnshǔ yù rè péngzhàng, yù lěng shōusuō. All metals expand with heat and contract with cold. Source: AI Challenger 2017