单词	teaser ad
释义	teaser adˈteaser ad noun [countable] an advertisement that is used to make people interested in a product, but that does not give very much information about the product, so that people will pay attention to more advertisements later
随便看	ultramarine ultraportable ultrasonic ultrasound ultraviolet ululate ululation Uluru Ulysses um umami um and ah umber umbilical cord umbrage umbrella UMIST umlaut ump umpire umpteen umpteenth UMWA U.N. UN

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