David读书科普

@david_dong • Joined March 14, 2013

Subscribers 226,535 | Views 8,001,156 | Videos 145

Subs#258,902

Subs#3,516

Views#823,198

Views#11,600

@david_dong • Joined March 14, 2013

Sub 226K | View 8.00M | Video 145

#258,902

#3,516

#823,198

#11,600

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