"相当大比率" 可以用 "a considerable proportion" 来表示。这个短语来源于拉丁语,"proportio" 意思是 "关系,比例"。例句如下:
A considerable proportion of the population speaks Engpsh as a second language.
相当大比例的人口讲英语作为第二语言。
A considerable proportion of the profits will be reinvested in the company.
相当大比例的利润将被再投资于公司。