noun🔗Share热成层，增温层 The layer of the Earth's atmosphere directly above the mesosphere and directly below the exosphere."Satellites orbit the Earth within the thermosphere, a layer of the atmosphere where temperatures can get very hot. "卫星在热成层/增温层内绕地球运行，热成层是大气层的一个层，那里的温度会变得非常高。spaceastronomyweatherscienceenvironmentChat with AIVocabulary GamePractice Reading
