richartleo 发表于 2021-9-29 13:57:42

The Everything Kids' Science Experiments Book: Boil Ice, Float Water, Measure...



The Everything Kids' Science Experiments Book: Boil Ice, Float Water, Measure Gravity-Challenge the World Around You!

下载：The_Everything_Kids_Science_Experiments_Book.pdf:（访问密码：107138）

jeffbama 发表于 2021-9-30 01:42:20

多谢分享

茄子酱 发表于 2021-9-30 09:05:40

谢谢分享

Giant 发表于 2021-10-6 09:05:00

谢谢
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