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	Amtrak amuck amulet Amundsen, Roald amuse amused amusement amusement arcade amusement park amusing amusingly Amway an -an an- -ana Anabaptist anabolic steroid anachronism anachronistic anaconda anaemia anaemic anaerobic anaesthesia

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