brisk
a.轻快的;兴隆的;寒冷而清新的
a brisk walk步履轻盈的散步
brittle
a.易碎的;脆弱的;冷淡的;(声音)尖利的
The branches were dry and brittle.那些树枝干而脆。
browse
vi.随意翻阅，浏览;(牛、羊等)吃草
Jon was browsing through the photographs.乔恩在翻看照片。
aggressive
a.侵犯(略)的,挑衅的;敢做敢为的
Jim’s voice became aggressive.吉姆的声音凶了起来。
