gas

中文： 气体、气

1. Matter in an intermediate state between liquid and plasma that can be contained only if it is fully surrounded by a solid (or in a bubble of liquid, or held together by gravitational pull); it can condense into a liquid, or can (rarely) become a solid directly by deposition. (uncountable) · A lot of gas had escaped from the cylinder.
2. A flammable gaseous hydrocarbon or hydrocarbon mixture used as a fuel, e.g. for cooking, heating, electricity generation or as a fuel in internal combustion engines in vehicles, especially natural gas. (uncountable) · Gas-fired power stations have largely replaced coal-burning ones.
3. Poison gas. (uncountable) · The artillery fired gas shells into the enemy trenches.
4. A chemical element or compound in such a state. (countable) · The atmosphere is made up of a number of different gases.
5. A hob on a gas cooker. (countable) · She turned the gas on, put the potatoes on, then lit the oven.
6. Methane or other waste gases trapped in one's belly as a result of the digestive process; flatus. (uncountable) · My tummy hurts so bad – I have gas.
7. The supply of natural gas, as a utility. (countable, uncountable)
8. A humorous or entertaining event, person, or thing. (countable, dated, slang, uncountable)

复数 gases