Competition is common in every field of life. For example, the Olympic Games is the most famous competition in the world.In the four hundred meter swimming race, the swimmers plunge into the water at the signal. Each swings his or her arms and legs and tries his or her best to be the first.Also there is the competition for jobs, for promotion, for customers, and so on. We can say, in a certain sense, competition stimulates people's interest in work and helps society to go forword.

　　竞争在各行各业都是常见的，比如奥林匹克运动会是世界最有名的竞争。在400米游泳赛中，一声信号，游泳运动员就扎进水中，个个挥动臂膀奋力击水，争夺第一。人们也为工作竞争，争提升，争顾客等，从某种意义来说，竞争激励人们工作兴趣，有助于社会前进。