quadannual
形容词 adj.
英文释义
形容词 adj.
-
Once every four years; quadrennial.
— Under mounting pressure from native people, who began attending their quadannual conventions in the mid-1970s, both the World Conservation Union (IUCN) and World Parks Congress have voted by wide majorities their approval of […]
词源
From quad- + annual.
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数据来源: Wiktionary