Youtube上的频道如 Knowledge for Students



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599,000 2.82%

1,420,000 3.63%

10,900,000 2.82%

6,240,000 3.44%

1,220,000 2.83%



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125,000 3.75%


424,000 4.56%

891,000 2.61%


155,000 7.7%

226,000 2.57%

457,000 4.84%


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1,020,000 3.13%