名词 flatfoot:

1. a policeman who patrols a given region

2. a foot afflicted with a fallen arch; abnormally flattened and spread out

flatadj.平坦的；扁平的；单调的；断然的；[音乐]降音的；气不足的adv.平直地；直截了当；低于标准音高地n.<英>公寓；平面部分；[音乐]降半音；泄气轮胎v.变平；降调；住公寓flatbedn.平板式；平板车adj.平板式的

1. Flat feet need additional motion control and firm heel counters.
   平足需要额外的动作控制和牢固的鞋跟。