"Ped" prefix or suffix

今天的空中英語教室學到的
ped, pod : related with foot

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pedestrian (n)(a)
pedal:踏板
pedlar:(v) 沿街叫賣 (n) 攤販
peddle (v)
pedometer: 計步器

tripod
centipede, millipede: 節肢動物


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