单词	lacuna
释义	lacunala‧cu‧na /ləˈkuːnə/ noun (plural lacunae /-niː/ or lacunas) [countable] formal Word Origin WORD ORIGINlacuna Origin: 1600-1700 Latin ‘pool, hole in the ground, empty space’ Examples EXAMPLES FROM THE CORPUS Let us call this the structural lacuna of the intentional scenario. What I wish to suggest is that filling the structural lacuna makes structured talk without higher-order thought look much less likely. a place where something is missing in a piece of writing SYN  gap
随便看	Union of Soviet Socialist Republics Union Station union suit unique uniquely uniqueness unisex unison unit Unitarian unitary Unite unite United united United Arab Emirates United Artists United Farm Workers United Kingdom United Nations United Nations High Commission for Refugees United Negro College Fund United Reformed Church United States Citizenship and Immigration Services United States of America

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