单词 历史方面 例句 DEFINITIVE EXAMPLES 权威例句〔acquaintance〕They had little or no acquaintance with philosophy or history.他们在哲学或是历史方面几乎一无所知。柯林斯高阶〔authority〕She's a world authority on 19th-century Irish history.她是19世纪爱尔兰...