perhydroWiktionary 原文英美构词拆解perper-前缀hydrohydro词干per-(unproductive) In verbs: denoting the sense "through", as in perforate. · (unproductive) In verbs: denoting the sense "thoroughly", as in perfect.词源说明From per- + hydro.释义形容词adjective1(organic chemistry, in combination) Describing any saturated compound or radical in which every double bond has been replaced as if by the addition of hydrogen