radonproofWiktionary 原文英美构词拆解radonradon词干proof-proof后缀-proofAdded to a noun to form an adjective denoting imperviousness to that noun. · Added to a noun to form a verb denoting a process to make something impervious to that noun.词源说明From radon + -proof.释义形容词adjective1Resistant to the harmful effects of radon.