About TED-Ed:回饋循環:萬物如何去依循 results of 10,000
193:45
08:22
14:01
11:40
05:37
01:43
04:03
04:36
08:27
01:05
10:55
04:15
01:20
04:16
13:01
12:03
07:04
19:21
08:43
13:05
14:04
06:50
06:22
11:41
04:03
04:51
05:27
09:04
14:15
36:50
06:58
20:43
04:07
03:21
01:54
05:38
04:45
05:47
11:23
97:12
06:43
00:47
05:18
23:55
04:15
07:55