David读书科普

@david_dong • Joined March 14, 2013

Subscribers 226,958 | Views 8,016,582 | Videos 145

Subs#261,858

Subs#3,548

Views#837,469

Views#11,760

@david_dong • Joined March 14, 2013

Sub 226K | View 8.01M | Video 145

#261,858

#3,548

#837,469

#11,760

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