When sunlight strikes the Earth's surface, some of it is re-radiated back towards space as infrared radiation (heat).
当阳光照射到地球表面，一部分阳光作为红外辐射(热)被重新辐射回太空。
The kinetic energy falling onto the compact star simply heats the surface and is re-radiated as black-body radiation.
落到致密星上的动能只是简单地加热了星的表面，并以黑体辅射的形式再发射出去。
The discrepancy is due to greenhouse gases in the atmosphere, which absorb and re-emit infra-red radiation, and thus keep the lower atmosphere, and the surface, warm (see the diagram below).
究其原因，原来是大气中的温室气体造成了这种温度上的差异。温室气体吸收，并再度释放了远红外辐射，使得底层大气与地表保持温暖(参见以下附图)。
应用推荐