01 / 15CrashCourse≈ mức xấp xỉB22:08–2:14 , “” .
02 / 15CrashCourse≈ mức xấp xỉB10:44–0:50
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03 / 15CrashCourse≈ mức xấp xỉB12:50–2:58
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04 / 15TED-Ed≈ mức xấp xỉB22:56–3:07
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05 / 15TED-Ed≈ mức xấp xỉB20:19–0:32
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06 / 15TED-Ed≈ mức xấp xỉB24:41–4:54
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07 / 15BBC Ideas≈ mức xấp xỉC11:46–1:57
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08 / 15CrashCourse≈ mức xấp xỉB21:13–1:22
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09 / 15Sprouts≈ mức xấp xỉB20:00–0:10
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10 / 15CrashCourse≈ mức xấp xỉC16:09–6:20
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11 / 15CrashCourse≈ mức xấp xỉB21:54–2:01
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12 / 15WIRED≈ mức xấp xỉB19:17–9:25
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13 / 15The New Yorker≈ mức xấp xỉB21:14–1:24
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14 / 15CNBC Make It≈ mức xấp xỉC12:18–2:27
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15 / 15TED≈ mức xấp xỉC11:06–1:17
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