买一送一!

　　If you want to get healthy, get out of your car and onto your bike; two wheels are better than four!

　　如果你想要健康，那么改骑自行车吧，骑自行车比开汽车好。

　　讲解：

　　当一个人说 two wheels are better than four 的时候他的意思就是骑自行车比开汽车好。

　　请注意

　　所谓 two-for-one 就是汉语里的买一送一，买一个送一个。

　　I hope you like eating cabbage; I got them on a two-for-one offer at the supermarket, so weve got lots to eat.

　　我希望你能喜欢吃白菜，超市买一送一，我买了很多，所以我们有得吃了。