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Member for
2 ปี 9 เดือนAge: 12-15
Level: 7
Language: Chinese
(zh)
ไอดี: 1208841
29/07/2021
Country code: TW
Country: Taiwan
Main content: Maths (2012708)
Xt第一冊
1-4-12指數記法與科學記號--整數的乘方
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