序号	六级主题词	观察库频数	主题值	英语(一)主题词	观察库频数	主题值	英语(二)主题词	观察库频数	主题值
1	robots	20	184.36	digital	19	80.79	students	46	167.18
2	Antarctic	15	115.86	media	31	68.06	jobs	28	99.18
3	scientists	25	111.09	companies	31	66.70	Facebook	8	89.65
4	government	8	88.06	peer	15	64.42	cent	16	88.44
5	AI	12	83.26	AI	10	64.00	workers	27	69.63
6	researchers	21	69.68	social	33	59.95	companies	27	52.74
7	marine	16	69.62	state	48	53.36	gap	15	47.16
8	organic	16	69.51	fashion	19	50.38	college	25	45.18
9	cities	20	57.12	tax	31	49.91	housing	14	39.02
10	climate	15	56.52	justices	9	45.83	social	26	36.29
11	science	22	53.72	discovery	15	44.95	recession	10	35.94
12	agriculture	13	50.42	factors	5	43.74	generation	17	32.91
13	academic	17	50.25	boards	12	42.99	UK	9	32.52
14	smartphone	5	48.85	consumers	14	42.75	count	4	31.57
15	stress	18	46.33	court	25	42.02	work	48	28.32
16	sensors	8	41.67	law	33	40.55	women	27	25.76
17	photos	11	40.14	sector	14	34.23	corporate	13	24.03
18	humans	16	39.59	print	13	33.74	economy	17	23.31
19	hunting	13	39.26	ruling	11	31.23	apps	3	23.30
20	debris	9	38.15	sales	15	30.98	robots	5	23.24
21	birds	12	33.62	unions	10	30.57	labor	15	21.50
22	breeding	9	33.21	NHS	6	29.92	zone's	3	18.80
23	choices	12	33.05	Britain	13	28.72	factors	3	18.80
24	social	26	31.96	online	15	28.35	governments	10	18.74
25	decision	21	31.95	pressure	17	26.22	tech	9	18.56
26	farmers	10	27.89	researchers	13	26.01	tasks	8	17.38
27	grades	8	25.18	scientific	13	24.08	economic	18	15.40
28	food	21	24.04	marketers	5	23.33	home	30	15.30
29	krill	6	23.49	google	3	22.88	climate	8	14.50
30	sustainability	5	23.45	prize	10	22.56	psychologist	5	13.56