A bicycle came into sight on the main road.

　　大路上出現(xiàn)了一輛自行車。

　　A bicycle is often more convenient than a car in towns.

　　在城鎮(zhèn)騎自行車常常比開車更方便。

　　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。

　　Statistics show that far more people are able to ride a bicycle than can drive a car.

　　統(tǒng)計資料表明，會騎自行車的人比會開汽車的人多得多。

　　We went for a bicycle ride on Sunday.

　　我們星期天騎自行車兜風了。

　　The height of the bicycle seat is adjustable.

　　這輛自行車車座的高度可以調(diào)節(jié)。