单词	plan b
释义	请查阅词条：b
随便看	on somebody's hands require of requirer requirer requires require something of require something of require sth of require to requiring requiring help requisite requisite for requisitely requisitely requisiteness requisitenesses requisites requisite variety requisition requisitionally requisitionary requisitioned requisitioner requisitioner 社会保险社会保障社会保障卡社会保障基金社会关系社会制度社会存在社会学社会工作社会形态 Beschaffungszeitpunkt Beschaltung Beschaltungsplan beschatten beschattet Beschaufeldurchmesser Beschaufeln Beschaufelschub Beschaufelswirkungsgrad Beschaufelung