1N-COUNT [usually n NOUN](储存气体或化学品的)金属罐,金属桶 A canister is a strong metal container. It is used to hold gases or chemical substances. (储存气体或化学品的)金属罐,金属桶
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。
...canisters of commercial fuel. [+ of]
商用燃料罐
2N-COUNT (用金属、塑料、瓷器制作的盛放糖、面粉等的)盒子,罐子,筒 A canister is a metal, plastic, or china container with a lid. It is used for storing food such as sugar and flour. (用金属、塑料、瓷器制作的盛放糖、面粉等的)盒子,罐子,筒
3N-COUNT 胶卷筒 A canister is a flat round container. It is usually made of metal and is used to store photographic film. 胶卷筒
She bought a travel-bag large enough to contain the film canisters.