Among them,the top ones have fled to Shanghai,those of the second rank to Hankow,those of the third to Changsha,and of the fourth to the county towns. 他们中间,头等的跑到上海,次等的跑到汉口,三等的跑到长沙,四等的跑到县城。
用作副词 (adv.)
I'll send the package first class. 我把这邮包按第一类邮件邮寄。
You'd better send this heavy letter by first class mail. 你最好把这封厚信按第一类邮件邮寄。