单词	勇於
释义	勇於brave at (private quarrels);
随便看	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 universal gear measuring instrument universal gear tester universal geodetic datum universal goniometer universal grammar universal graphic recorder universal graphic recorder，ugr universal gravitation universal gravitational constant