单词	um and ah
释义	um and ahˌum and ˈah verb [intransitive] informal to think for some time before making a decision:  He ummed and ahed a bit but eventually agreed to help us.
随便看	corked corker corking corkscrew Corleone, Vito cormorant corn cornball Corn Belt corn bread corn chip corncob corncrake corn dolly cornea corneal corned beef Cornell corner corner shop cornerstone cornet Cornetto corn exchange cornflakes

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