同根常考词汇：需掌握
◆brevity[’breviti]n.短暂；简洁
举例：Bacon’s essays are famous for their brevity，
compactness and powerfulness.
培根的散文以简洁，紧凑，有力度而著名。
同形：brief[brif]n.摘要，概要：a.短暂的，见解的
briefness[‘bri：fns]n.短暂；简洁
briefcase[’brifkeis]n.公文包
