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Reducing the use of disposable cups and disposable chopsticks is a necessary measure for environmental protection. vacuum flask 英[ˈvækjuəm flɑ:sk] 美[ˈvækjuəm flæsk] n. 真空瓶; 保温瓶; 热水瓶; 杜瓦(真空)瓶; [例句]The vacuum flask has a strong casing, which won't crack or chip 这种热水瓶瓶身坚固,不易断裂破碎。 |
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