INVTRn.变换器(倒相器；转换开关)INVabbr.发明者(=Inventor)abbr.反相器(=Inverter)abbr.体外授精(=in vitro fertilization)involute arc渐开弧invulnerableadj.固若金汤的；无法伤害的Invasibility入侵性inviting bit招标invulnerablyadv.不会受伤害地(破坏不了地；无懈可击地)invigorativeadj.有精神的；强壮的；激励的invisibilityn.看不见；隐形invigoratingadj.精神充沛的动词invigorate的现在分词形式.inver-over反序杂交invultuationn.(巫术)显形