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Member for
3 years 4 monthsAge: 12
Level: Grade 1
Language: Chinese
(zh)
ID: 1334997
31/08/2021
Country code: MY
Country: Malaysia
Main content: 机械 (1998666)
解释简单机械的种类，如斜面、杠杆、尖劈、齿轮、螺旋、滑轮和轮轴和其用处
Other contents: 简单机械
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