单词	hard zone
释义	hard zone 硬化区
随便看	extension tongs extension tongue test extension tool shank extension total access communication sys extension to the hospital extension traction extension training Extension Training Management Extension Training Material Extension Training Memorandum extension transaction extension transform extension transformation extension transforming extension tray extension trestle badder extension trestle ladder extension tripod extension trunk dialing extension trunk link frame extension tube Extension-tube extension tube for angiography extension tube for uterine biopsy forceps extension tubes