4周搞定2000+托福核心词
excusable = ex(向外) + cus(原因) + able(能…的) = 能向外是有原因的→可以原谅的
expediency = ex(向外) + pedi(脚) + ence(性质) + y(表名词) = 脚向外踏→权宜
abrasion = ab(表加强) + ras(刮擦) + ion(表名词) = 磨损
abstraction = abs(离去) + tract(拉) + ion(表名词) = 被拉开→抽象
向外扩展→扩大
expansion
常考释义
Food production has kept pace with soaring populations mainly because of the expansion of artificial irrigation systems that make possible the growth of 40 % of the world's food.
食品供应能跟上人口剧增主要是由于人工灌溉系统的扩张使得世界粮食产量提高了40%。
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