outgas
/ˌaʊtˈgæs/verb
(-gases, -gassing, -gassed)with obj.
- release or give off (a substance) as a gas or vapour以气体方式排放（某物质）, 以蒸汽方式排放：
glue may outgas smelly volatile organic compounds
胶水会释放出有异味的挥发性有机化合物
no obj. samples are heated and begin to outgas.样品加热后开始释放出气态物质。