impermeableWiktionary 原文中文来自 ECDICTadj.不能渗透的，不能通过的构词拆分im-前缀Expressing negation; not.+permeable词根/词干词源说明Apparently from im- + permeable. Compare French imperméable, from Latin impermeābilis, from im- + permeābilis (“permeable”).释义（英文）形容词 AdjectiveImpossible to permeate.Not allowing passage, especially of liquids; waterproof.词族派生词（2）impermeablenessimpermeably相关词（2）permeabilityimpermeability