单词	mechanical pencil
释义	mechanical pencilmeˌchanical ˈpencil noun [countable] American English a pencil made of metal or plastic, with a thin piece of lead (=the part that you write with) inside SYN propelling pencil British English
随便看	Ulster Defence Association Ulster Defence Regiment Ulster Democratic Unionist Party Ulster Unionists Ulster Volunteer Force ulterior ultimate ultimate fighting ultimately ultimatum ultra- Ultrabook ultramarine ultraportable ultrasonic ultrasound ultraviolet ululate ululation Uluru Ulysses um umami um and ah umber

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