单词	長子居幼者之先
释义	同BEFORE
随便看	universal fairleader universal fatigue machine universal favor universal fermi weak interaction universal file access method universal file access method--ufam universal file access method，ufam universal file access system universal file access system，ufas universal filter universal finder universal fixed type universal fixture universal fixturing universal floppy reader universal form universal frequency counter universal frequency counter，ufc universal function universal fuse link universal galvanometer universal gas chromatograph [universal] gas constant universal gas constant universal--gas constant