单词	bone up
释义	请查阅词条：bone
随便看	projectionist projectionist projectionists projection lens projection printer projection printing projection room projection rule projections projection system projection television projection test projection tv projection weld projection-welded projection welder projection welding projective projective geometry projective identification projectively projectively projective plane projective property projective space 家常饭家底家庭家庭医生家庭妇女家庭影院家庭教师家庭暴力家庭病床家当 Zylinderrichtung Zylinderrohr Zylinderrohrunterkante Zylinderrolle Zylinderrollenlager Zylinderschieber Zylinderschleifmaschine Zylinderschmierapparat Zylinderschmierpresse Zylinderschmierung