not allowing fluid to pass through 不能渗透的,透不过的 an impervious layer of basaltic clay. 一层不渗透的玄武岩粘土。 ■[predic.](impervious to)unable to be affected by 不受影响的 he worked, apparently impervious to the heat. 他干着活,似乎不受炎热的影响。
派生 imperviously adverb imperviousness noun 语源
mid 17th cent.: from Latin impervius (from in- 'not' + pervius 'pervious') + -ous