热成层 Save Sign in to save words Traditional (Taiwan): 熱成層 rèchéngcéng ㄖㄜˋ ㄔㄥˊ ㄘㄥˊ thermosphere (nonstandard synonym of 热层 rècéng) Character by character 热(rè)warm up 成(chéng)surname Cheng 层(céng)pile on top of one another A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0