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N-UNCOUNT
气体燃料；天然气；煤气
Gas is a substance like air that is neither liquid nor solid and burns easily. It is used as a fuel for cooking and heating.
例句
Coal is actually cheaper than gas...
煤实际上比煤气便宜。
Shell signed a contract to develop oil and gas reserves near Archangel.
壳牌石油公司签订了一份开采阿尔汉格尔附近的石油和天然气资源的合同。
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N-VAR
气体
A gas is any substance that is neither liquid nor solid, for example oxygen or hydrogen.
例句
Helium is a very light gas.
氦是一种非常轻的气体。
...a huge cloud of gas and dust from the volcanic eruption.
火山喷发形成的混杂着气体和尘埃的巨大云团
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N-MASS
毒气，瓦斯（可用作武器）
Gas is a poisonous gas that can be used as a weapon.
例句
...mustard gas...
芥子气
The problem was that the exhaust gases contain many toxins.
问题在于废气中含有很多毒素。
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N-MASS
（医用）麻醉气
Gas is a gas used for medical purposes, for example to make patients feel less pain or go to sleep during an operation.
例句
...an anaesthetic gas used by many dentists.
为许多牙医使用的一种麻醉气
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N-UNCOUNT
（车辆用的）汽油
Gas is the fuel which is used to drive motor vehicles.
例句
...a tank of gas.
一桶汽油
...gas stations.
加油站
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VERB
用毒气杀死
To gas a person or animal means to kill them by making them breathe poisonous gas.
例句
Her husband ran a pipe from her car exhaust to the bedroom in an attempt to gas her.
她的丈夫将一根与她的汽车排气管相通的管子导入卧室，企图用毒气将她杀死。
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N-SING
活泼有趣的事；令人愉快的场面
You can describe a situation or event as a gas when it is very lively, amusing, and enjoyable.
例句
It was really a gas to find someone I could talk with.
找到一个能和我谈得来的人真是一件让人高兴的事。
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PHRASE
加大油门；加速
If you step on the gas when you are driving a vehicle, you go faster.