อยากได้แบบฝึกหัดฟรีนับพัน (ไม่มีสิ่งรบกวนเลย)?
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భౌతికశాస్త్రం
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ధ్వని
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Age 12-13
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level: 8
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Telugu
คำแนะนำของผู้เขียน
ధ్వని లక్షణాలు
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-
భౌతికశాస్త్రం
-
ధ్వని
-
Age 12-13
-
level: 8
-
Telugu
คำแนะนำของผู้เขียน
ధ్వని లక్షణాలు