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来源:雅诚德英语网
A closed system would be, for instance, a glass of ice water with an ice cube in it, with the lid on top.
一个封闭系统可以是,比如说,一杯放了一个冰块的冰水,顶上加了盖子。
A closed system would be, for instance, a glass of ice water with an ice cube in it, with the lid on top.
一个封闭系统可以是,比如说,一杯放了一个冰块的冰水,顶上加了盖子。