22 宣称：Allege, assert, declare, claim

23 发生：Happen, occur, take place

24 原因：Reason, factor, cause

25 发展：Development, advance, progress

26 有益的：Useful, helpful, beneficial, profitable, rewarding， advantageous

27 影响：Influence, impact, effect

28 明显的：Clear, obvious, evident, self-evident, manifest, apparent, crystal-clear

29 占：Comprise, take up, account for, constitute, consist of, make up, occupy, hold,

compose

30 与…相比：Compared with，compared to，in comparison with，in comparison to，b
y comparison with，by comparison to

31 对比而言：By contrast，in contrast，on the other hand，on the contrary=，conver
sely

32 展示：Show, reveal, illustrate, demonstrate, depict, present, represent, describe

33 大约：Approximately，almost，about，around，nearly，roughly3

4 波动：Fluctuate，go ups and downs，display a fluctuation，demonstrate a fluctuati
on

35 事实上：Practically，in practice，essentially，in essence，in reality，in effect，in fa
ct，as a matter of fact，it is a fact that

36 换言之：Namely，that is to say，in other words，to put it like this，to put it diff
erently，to put it from another way，to put it from another angle