impermanent
Word family nounimpermanencyimpermanenceadjectiveimpermanentadverbimpermanently
im·per·ma·nent /ɪmˈpɜːmənənt $ -ɜːr-/ adjectiveadj formal ALWAYS/EVERY TIMEnot staying the same forever 非永久的,临时的 SYN temporary OPP permanent single-storey structures, built from cheap and impermanent materials 用廉价而不耐久的材料建成的单层建筑
—impermanence noun [uncountableU] His philosophy stressed the impermanence of the world. 他的哲学观点强调世界的无常。