category_1.id,category_1.ts,category_1.title
1,"2018-10-28 22:51:01",生物科学
2,"2018-10-28 22:52:16",医药卫生
3,"2018-10-28 22:54:38",机构组织
4,"2018-10-28 22:56:28",常用词汇
5,"2018-10-28 23:02:24",电子电工
6,"2018-10-28 23:02:51",时尚用语
7,"2018-10-28 23:03:37",化学化工
8,"2018-10-28 23:03:49",自科总论
9,"2018-10-28 23:04:32",数学物理
10,"2018-10-28 23:04:43",语言文字
11,"2018-10-28 23:05:38",军事政治
12,"2018-10-28 23:06:15",文化教育
13,"2018-10-28 22:13:22",文学
14,"2018-10-28 23:06:24",艺术
15,"2018-10-28 23:06:53",天文地理
16,"2018-10-28 23:07:40",工业工程
17,"2018-10-28 23:07:54",农业科学
18,"2018-10-28 23:08:12",环境安全
19,"2018-10-28 23:09:43",经济管理
20,"2018-10-28 23:10:10",航空航天
21,"2018-10-28 23:11:06",交通运输
22,"2018-10-28 23:11:17",社科总论
23,"2018-10-28 23:11:25",体育
24,"2018-10-28 22:13:22",历史
25,"2018-10-28 22:13:22",哲学
26,"2018-10-28 23:11:35",轻工业
27,"2018-10-28 23:11:41",土木建筑
28,"2018-10-28 23:11:47",法律
29,"2018-10-28 22:17:29",其他