1.befoundin
2.beassociatedwith
3.betypicalof
4.theuseof
5.relyon
6.bederivedfrom起源于
7.referto
8.beknownassb
9.beknownforsth
10.beconcernedwith
11.inrelationto关于，与相比
12.acton对……起作用
13.bringabout使发生
14.protect....from
15.togetherwith
16.anumberof
17.beableto
18.besimilarto
19.bedependenton
20.withease熟练的
21.accordingto
22.specializeindoingsth
23.serveas
24.atonetime
25.tendto
26.interestin
27.dueto
28.leadto
29.atleast
30.contraryto
31.beequalto
32.contributetodoingsth
33.livein
34.bededicatedtodoing
35.dealwith
36.belongto
37.itisestimatedthat
38.beresistantto
39.resultfrom
40.consistof
41.inconnectionwith
42.transforminto
43.takeplace
44.excelatdoing擅长于
45.bebasedon
46.playakeyrole
47.spreadto