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Member for
3 ปี 10 เดือนAge: 15-18
Level: 10, 12
Language: Vietnamese
(vi)
ไอดี: 336157
25/08/2020
Country code: VN
Country: Vietnam
Main content: Vị trí nguyên tố trong bth (1140348)
Thuộc một số nguyên tố trong BTH
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