About TED-Ed:回饋循環:萬物如何去依循 results of 10,000
02:21 05:28 05:17 05:25 06:17 08:11 04:18 02:05 02:40 03:46 19:48 01:14 08:47 01:05 20:28 10:36 03:06 04:09 33:13 06:46 00:59 05:51 10:39 02:42 02:09 06:01 01:15 02:11 06:44 02:12 03:46 05:25 02:27 03:50 11:34 03:42 09:05 12:10 09:21 01:43 19:18 02:09 07:05 05:33 11:37 07:03