pene·tra·tionBrE/ˌpenəˈtreɪʃn/NAmE/ˌpenəˈtreɪʃn/noun[U]theactorprocessofmakingawayintoorthroughsth穿透;渗透;进入◆Thefloorissealedtopreventwaterpenetration. 地板加了密封涂料防止渗水。◆thecompany'ssuccessfulpenetrationofoverseasmarkets公司对海外市场的顺利开拓theactofamanputtinghispenis into his partner's vagina or anus(男人阴茎的)插入