canisters
n.
（通常为金属的）小罐（装茶叶、咖啡等）( canister的名词复数 );
霰弹筒;
例句:
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She bought a travel-bag large enough to contain the film canisters.
她买了一只能装得下那些胶卷筒的旅行包。
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Certain types of foods are also dispensed in pressurized canisters.
某些种类的食物也可以装入密封的金属罐里。
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Store in airtight canisters between sheets of wax paper.
来自WSJ
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Riot police hurled tear gas canisters and smoke bombs into the crowd.
防暴警察向人群中投掷了催泪瓦斯罐和烟幕弹。
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In my experiment, I did this for canisters.
来自BBC
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Some students got regular canisters without any red chips.
来自WSJ