1. 顷刻：transience 短暂 | transiency 顷刻 | transient 短暂的

2. 虚幻：transiency 顷刻 | transiency 虚幻 | transigent 愿意妥协者

3. 顷刻/无常/虚幻：transience /顷刻/ | transiency /顷刻/无常/虚幻/ | transigent /愿意妥协者/

noun

1. an impermanence that suggests the inevitability of ending or dying

Synonym: transiencetransitoriness