B2 [ C or U ] a substance in a form like air that is neither solid nor liquid气,气体
A2 [ C or U ] a substance in a form like air that is used as a fuel for heating and cooking气体燃料,煤气,天然气
[ U ] informal a substance in a form like air used for medical purposes to prevent people feeling pain or being conscious during an operation(外科手术用的)麻醉气
[ U ] mainly US UK wind air in the bowels or in a baby's stomach, especially when this makes you feel uncomfortable or makes noises肠气,胃气,肠胃气胀
More examples
The initial cloud of tear gas had hardly cleared before shots were fired.
Carbon monoxide is a colourless, odourless, poisonous gas.
Certain gases are highly explosive.
These factories are releasing toxic gases into the atmosphere.
The volcano spewed a giant cloud of ash, dust and gases into the air.
A2 [ U ] US also formal gasoline, UK petrol a liquid obtained from petroleum, used especially as a fuel for cars, aircraft, and other vehicles汽油
the part of a car that you push with your foot to make it go faster油门,加速器
More examples
He stopped the car next to the gas pump.
It's 50 miles to the next gas station.
I rent a subcompact when I'm travelling alone because it saves on gas.
We ought to fill up with gas before we set off.
My foot slipped off the gas pedal as I was trying to overtake the lorry.
[ S ] mainly US informal old-fashioned a funny or enjoyable situation有趣的情形,令人愉快的场面;有趣的事
[ T ] to kill or injure a person by making them breathe poisonous gas用毒气杀死,用毒气杀伤
[ I ] old-fashioned informal to talk for a long time about things that are not important闲聊
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