单词	know-all
释义	know-allˈknow-all noun [countable] British English informal someone who behaves as if they know everything – used to show disapproval SYN know-it-all American English
随便看	tête-à-tête U. U UAE UAV UAW UB40 uber- ubiquitous ubiquitously ubiquity U-boat UCAS UCATT UC Berkeley Uchida, Yoshiko UCLA UDA udder UDR UEFA UFO UFW Uganda Ugandan

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