He rides his mo-ped to the market every day to buy groceries.

mo-ped 是 motor（马达）和 pedal（踏板）组合而成的复合词，指"装有小型发动机的踏板车"，也就是我们常说的"小摩托"或"助力车"。这种车通常比摩托车体积小，速度也较慢。