Bike, our mode of transportation, as the technology is now more out of it already do not. However, in our time to travel to bring it give us a lot of benefits. Although it is relying on our human resources to drive, but can not because of trouble, it can strengthen our physical me is conducive to our health, travel by bicycle can protect our environment from pollution. We still ride a bike to travel b( 自行车,我们的一种交通工具, 随着现在更加的科技化它已经别淘汰。 但是,在我们出门旅行的时候带上它会给我们带来很多的好处。 虽然它是靠我们人力来驱动,但是不可因为麻烦, 它可以锻炼我们我的身体素质,有利于我们的健康,靠自行车出行可以保护我们的环境不被污染。我们还是骑自行车来旅行吧)