放出气体

mains gas───主煤气

white gas───白色气体

semiwater gas───半水煤气

flints glass───含铅玻璃；无色玻璃；[玻璃]火石玻璃

air gas───风煤气

amigas───朋友

edits out───编辑中删除

He hopes to prod utilities and manufacturers into switching from coal to natural gas, which emits half the amount of greenhouse gases.───他希望能够采取措施激励公用事业和制造业从燃煤到燃气的转化，因为美国有一半的温室气体是由这些部门排放的。

The utility model has significant advantages in that it emits gas in the exploiting pillar automatically and efficiently, disassembles and cleans easily.───本实用新型的显著优点是它能够有效自动排出开采柱中的气体，而且拆卸和清洗方便。

reflection nebulae like DG 129, which reflects light from nearby stars, this nebula emits light from hot ionized gas that glows as it cools.───反射星云DG 129反射的是临近恒星的光芒，而照片中的星云光芒则是由于其中炙热的电离气体变冷时发出的。