triannual / traɪˈæn yu əl /

📖毕业后词汇三年度每年三次三年一次三年度的

triannual 的 2 个定义

adj. 形容词 adjective
  1. done, occurring, issued, etc., three times a year.
  2. triennial.
n. 名词 noun
  1. a triannual publication, contest, etc.
  2. triennial.