ruthless (adj.) ruthless adj.殘忍的；無情的ruthfulness n.充滿感傷引起憐憫(感傷).ruthfully adv.充滿感傷地引起憐憫(感傷)地.ruthful adj.悲哀的；充滿感傷的；引起憐憫(感傷)rutherfordium n.【化】鈩（第104號(hào)元素）rutherford n.盧瑟福(人名)ruthenocenylalanine 二茂釕基氨基丙酸ruthenium (n.) ruthenium n.[化]釕(符號(hào)Ru)ruthenic adj.[化](正)釕的；四價(jià)釕的ruthenate n.釕酸鹽ruth williams ruth the betrayer ruth reichl ruth parasol ruth milkman ruth harkness rutgers state university-newark [化學(xué)]羅格斯州立大學(xué)rutenol 對(duì)乙醇酰胺基苯胂酸