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初二版
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第654期
SCIENCE STUDY
Invisible dye makes mugs change their color when heated
初二
第654期
作者:teen
Aa
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为什么有些杯子遇热后会变色?
Have you ever had a mug that changes color when you put hot water in it? For example, some mugs show dinosaurs or other images when you add hot water. How do these mugs work?
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