Youtube上的频道如 Harvard Medical School


1,020,000 3.13%

61,100 3.58%

629,000 3.56%

20,400,000 2.43%

10,500,000 3.02%

17,600 1.92%




398,000 2.53%

389,000 1.37%

1,540,000 2.64%

1,570,000 1.49%

29,900 1.75%

3,390,000 1.13%

645,000 4.63%


146,000 2.25%

2,200,000 1.44%


25,300 1.79%