词典释义：
an air-like fluid substance which expands freely to fill any space available, irrespective of its quantity
气，气体
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hot balls of gas that become stars 演变成恒星的热气团
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[count noun]
poisonous gases .有毒气体。
【物理】 仅靠压力无法液化的气体物质。比较 <Bold>VAPOUR</Bold>.
a flammable substance of this type used as a fuel
可燃气体，气体燃料。
a gaseous anaesthetic such as nitrous oxide, used in dentistry
麻醉气（如用于牙科的氧化亚氮）。
gas or vapour used as a poisonous agent to kill or disable an enemy in warfare
（战争中使敌人丧生或致残的）毒气。
〈主北美〉 胃气，肠气；
【矿】 瓦斯。
〈北美，非正式〉 <Bold>GASOLINE</Bold>的简称。
(
〈非正式〉 令人愉快的人（或事）
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the party would be a gas .这个聚会会很好玩的。
[mass noun]
〈爱尔兰〉 快乐；娱乐；乐趣
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it was great gas in the club last night. 昨晚在俱乐部玩得太高兴了。
attack with or expose to gas
用（或受）毒气袭击
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my son was gassed at Verdun .我儿子在凡尔登受到毒气伤害。
kill by exposure to gas
用（毒气）毒死
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a mother and her children were found gassed in their car .人们发现一位母亲和她的孩子在他们的汽车内被毒气毒死了。
[no obj.](of a storage battery or dry cell)give off gas
（蓄电池，干电池）放出气体。
〈北美，非正式〉 （将汽车油箱）加满汽油
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after gassing up the car, he went into the restaurant .他给汽车加油之后就去了饭店。
[no obj.]
〈非 正式〉 啰嗦，闲谈；吹牛
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I thought you'd never stop gassing .我看你总在吹牛。
〈爱尔兰，非正式〉 非常有趣的；逗乐的
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Ruthie, that's gas — you're a gem. 露茜，太有趣了—— 你真了不起。
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run out of gas N. Amer. informal run out of energy; lose momentum 〈北美，非正式〉 没有能量；缺少动力 -
step on the gas N. Amer .informal press on the accelerator to make a car go faster 〈北美，非正式〉 踩油门加速
"mid 17th cent.: invented by J. B. van Helmont （1577—1644）, Belgian chemist, to denote an occult principle which he believed to exist in all matter; suggested by Greek
