bike的原型

原型是bicycle，例如：

1、A bicycle came into sight on the main road.大路上出現了一輛自行車。

2、A bicycle is often more convenient than a car in towns.在城鎮騎自行車常常比開車更方便。

3、When the traffic's this bad， a bicycle really comes into its own.在交通如此擁堵的時候，自行車就顯出了它的價值。