The bicycle is one of the most important vehicles in the world.
自行车是世界上最重要的交通工具之一tS+I0KMm-xouH。
In every country people use bicycles for work, for sport or just for fun.
在每个国家，人们都用自行车上班、锻炼或者只是为了玩|^fO;#^lDzVpGjf。
Bicycle riding is good exercise.
骑自行车是很好的运动QE,_+aoc%Xg+。
It helps people become fit.
它让人们变得更健康cYNph9pS9tfF11。
Bicycle riding can make the riders' hearts and lungs strong.
骑自行车能够让骑手的心脏和肺部变得更强Vu+.2F|GD.!A0o。
It is also good for the environment because bicycles do not cause pollution.
它对环境也有好处，因为自行车不会带来污染,exW#fVRcZ。
Bicycles share the road with cars and trucks.
自行车和轿车、卡车走相同的路_mw;fZQd1@q2K=HPqv|。
Drivers do not always notice bicycles.
司机们通常不会注意到自行车26q.eeJT1]dxw2)xkMP。
So bicycle riders must pay attention to the traffic around them and know traffic signals.
所以自行车骑手一定要注意周围的交通环境和交通信号灯#Zo7*o.z,4pYHrVQb,]。
They must know and obey the safety rules.
他们一定要了解并遵守安全规则9,)g19e%=_4#-fgfPq)。
They must wear helmets to protect their heads.
他们必须戴头盔以确保自己头部的安全9UWMXKd1)PiISD)Ci。
When riding at night, they must wear light-colored clothes, and have lights in the front and reflectors on the back of their bicycles.
晚上骑车的时候，一定要穿浅色的衣服，并且在自行车前面装上车灯，后面要有反光片08%sj;rO#gHze。
An accident on a bicycle may be serious.
自行车发生事故会很严重oVgJHhPS=Uafgcet%。
In case of an accident, bicycle riders should know how to give first aid.
为了以防万一，自行车骑手需要知道如何进行急救,JddQzhTAx=V=ABRs。
If an injury is serious, they must call 120 for help.
如果受伤很严重，一定要打120求救Rv27f)S^;v(。
In a word, the best way to be safe is to be careful.
总之，确保安全最好的方式就是小心@sP+aqT84b;F4*k5!jmj。