不可或缺的：necessary=indispensable=inevitable=irreplaceable=unavoidable

　　重要的：important=crucial, critical, essential, vital=be importance=be of cruciality=be of criticality=be of essentiality=be of vitality

　　巨大的：large=enormous, tremendous, considerable, appreciable

　　正确的（correct）=仔细的(careful)=arduous=assiduous

　　有道理的：reasonable=rational and plausible

　　吸引人的：attractive=inviting and appealing

　　足够的：adequate and sufficient

　　很多，许多：A a wealth of=a flood of=vast arrays of

　　B a tremendous(enormous/considerable/appreciable) amount(number/sum) of

　　更，越来越：more and more

　　A 更+ 具体名词（比如钱，人数等） a growing/increasing/climbing number/amount/sum of

　　抽象名词（比如影响，重要性）growing/increasing/climbing=B 更+形容词growingly/increasingly/climbingly=C 更+动词 to a larger extent

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