C2 a structure, consisting of a curved top on two supports, that holds the weight of something above it拱;拱形结构;拱门(或窗、顶、洞等)
something that has the shape of an arch, often used for decoration(常用作装饰的)拱形,拱形物
the raised curve on the bottom of your foot足弓,足背
specialized medical any organ or part of the body that is curved in shape弓(身体中曲线形或弧形的结构)
C2 to make the shape of an arch(使)拱起;(使)成拱形
showing that you think it is amusing that you know more about something than someone else does淘气的;调皮的
most important主要的;最重要的
greater or especially worse than others of the same type极度的;为首的;(尤指)极恶劣的
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