(3/) 2021-01-18 14:17:28
(2/) 2021-01-12 11:42:48
(0/) 2021-01-05 12:15:38
(3/) 2020-12-07 12:07:40
(0/) 2020-11-27 12:15:16
(24/) 2020-09-18 12:45:40
(36/) 2020-09-16 15:42:14
(7/) 2020-08-21 10:35:26
(2/) 2020-07-28 13:51:06
(12/) 2020-07-22 12:08:40
(2/) 2020-07-16 13:40:35
(31/) 2020-06-16 17:07:56
(12/) 2020-06-04 17:19:21
(25/) 2020-05-22 13:26:18
(0/) 2020-05-19 15:31:19
(21/) 2020-05-03 13:14:50
(12/) 2020-04-15 16:40:11
(2/) 2020-04-08 15:41:47
(19/) 2020-02-26 13:09:57
(49/) 2020-02-24 14:30:53
(50/) 2020-02-19 13:54:19
(1/) 2020-02-13 13:35:35
(21/) 2020-01-23 13:45:12
(6/) 2019-12-29 21:55:56
(4/) 2019-12-27 09:44:03
(6/) 2019-11-27 09:32:35
(8/) 2019-11-15 13:46:10
(5/) 2019-10-21 15:30:11
(24/) 2019-08-22 14:47:49
(27/) 2019-07-25 14:51:10
(103/) 2019-07-18 13:00:30
(1/) 2019-07-16 13:49:06
(2/) 2019-07-15 16:24:20
(2/) 2019-07-11 14:34:51
(13/) 2019-07-01 15:30:28
(31/) 2019-05-28 15:54:45
(20/) 2019-05-20 15:56:40
(10/) 2019-03-29 17:12:36
(2/) 2019-03-28 14:23:48
(3/) 2019-03-27 15:35:25
(1/) 2019-03-26 11:19:47
(4/) 2019-03-19 15:25:08
(43/) 2019-03-18 16:06:50
(0/) 2019-03-14 12:48:41
(7/) 2019-03-08 16:38:30
(1/) 2019-01-14 16:17:15
(12/) 2019-01-10 01:18:42
(0/) 2018-12-07 15:26:38
(0/) 2018-12-05 12:14:57
(4/) 2018-11-07 13:58:03
(16/) 2018-10-19 16:07:12
人类发展的坎儿 Great Filter - Fermi paradox
(0/) 2018-09-25 14:32:58
(0/) 2018-09-04 13:50:27
(74/) 2018-08-31 17:11:05
(1/) 2018-08-29 10:24:39
(10/) 2018-08-11 13:11:11
(66/) 2018-07-03 16:07:47
(0/) 2018-06-28 12:33:06
(0/) 2018-05-23 15:43:39
(0/) 2018-02-06 17:56:27