21.be indicative of ，be suggestive of ，be fearful of代indicate， suggest ，fear.
22.give rise to， lead to， result in， trigger替换cause.
23. There are several reasons behind sth替换……reasons for sth.
24.desire替换want.
25.pour attention into替换pay attention to.
26.bear in mind that替换remember.
27. enjoy， possess替换have(注意process是过程的意思)。
28. interaction替换communication.
29.frown on sth替换be against www.med126.com， disagree with sth .
30.to name only a few， as an example替换for example， for instance.
31. next to / virtually impossible替换nearly / almost impossible.
32.regarding/concerning替换about.
33.crucial/paramount替换important.
34.第一(in the first place/the first and foremost);第二(there is one more point ，I should touch on， that…。);第三(the last but not the least)。
35. assiduous替换hard-working
36. arduous替换difficult
37.underdeveloped/financially-challenged替换poor(因为poor通常含有贬义)
38. demonstrate /manifest替换show
39. invariably替换always
40. perilous/hazardous替换dangerous(写社会类作文时常用，说什么社会现象是不好的，有害的)
41. formidable替换difficult
42. quintessential替换typical(举例时常用，例如：a quintessential example should be cited that=for example; for instance)
43. distinguished替换famous
44. feasible替换possible
45. consequently， accordingly替换so
