beat up and down

来回奔走

bear with, bear-hug, bear/keep in mind, bearable, beard, bearded, beardless, bearer, bearing, bearish, bearlike, bearskin, beast, beast of burden, beastly, beat, beat down, beat off, beat sb into/to sth, beat time, beat-up, beater, beatific, beatifically, beatification, beatify, beating, beatitude, Beatles, beatnik, beau, Beaufort scale, Beaujolais, beaut, beauteous, beautician, beautification, beautiful, beautifully, beautify,