文档介绍：1. important =crucial (extremely important),significant(amount or effect large enough to be important) 
 
=universal, ubiquitous(if something is ubiquitous, it seems to be everywhere)
=ample(enough and usually extra), plentiful(enough for people's needs and wants) 
 
=adhere, cling(hold on something tightly) 
 
=ignore.(difference: neglect means someone has not paid enough attention to something; ignore means no attention.) 
 
=adjacent(twothings next to each other), adjoin(the same as adjacent) 
 
=woo(man woos woman, old-fashioned), seek(if you seek sth, you try to obtain it. FORMAL) 
 
=precise(precise is exact and accurate in all details), exact(correct in every detail) 
 
=obscure(unknown or known by only a few people) 
 
=peak, summit 
 
=rival, opponent(especially in sports and politics) 
 
=condemn(if you condemn something, you say it is very bad and unacceptable) 
 
=perspective, standpoint(means looking at an event or situation in a particular way) 
 
=prestige(describe those who are admired), reputation 
 
=erect(you can erect something as buildings, FORMAL), establish 
 
=humiliate(do something or say something which makes
people feel ashamed or stupid) 
 
=grumble (complain something in a bad-tempe