vasectomy输精管切除术

见sterilization条。

• order
• orderly
• ordinal
• ordinance
• ordinand
• ordinary
• ordination
• ordnance
• ordure
• ore
• organ
• organdie
• organic
• organism
• organization
• organize
• orgasm
• orgiastic
• orgy
• oriel
• orient
• orient
• oriental
• orientate
• orifice