第1个回答 2015-10-31
In 1790,a French name,with his mind he loved so much.One day,he walked on a street in Paris,because the day rained,accumulated a lot of rain,on the road is very bad.Suddenly,from behind a carriage is rolling in and the street is narrow,the carriage is very wide,the schiff,hide to hide to fortunately not knocked down by a car,or was spattered mud and rain.Others saw it,sorry for him,but also gas straight scold,want to shout the cart stopped,reasonable representations.The schiff,but murmured:"don't cry,don't shout,let them go." Carriage and walked away,he was standing on the side of the road,he was thinking:the road is so narrow,pedestrians and so much,why can't the carriage structure changed?Should the carriage along the cut off half,before and after the four wheels to two wheels...He thought,so home will begin to carry on the design.After repeated experiments,in 1791 the first walking "Trojan horse" of the car made out.The earliest bicycles are made of wood,its structure is simple,neither drive,also have no steering device,cyclists on foot hard ground,change direction,and can only move the car when the car.Even so,when the schiff,ride the bike to the park for a ride,all the people present are quite amazing and impressive.
回答
用途
Can be used as environmental protection of transport is used to instead of walking,travel; More and more people will be bicycle,bicycle,for fitness equipment used to riding exercise to travel; Bicycle itself is a sports competition sport,road cycling and mountain bike race,cycling,stunt bike race,etc.
1790年,法国的名字,与他的思想他爱这么多.有一天,他走在巴黎的大街上,因为天下雨了,积聚了大量的雨,在路上非常糟糕.突然,从后面一辆马车滚滚而来,街道狭窄,马车很广,希夫,躲躲不幸运的被一辆车撞倒,还是溅泥浆和雨.别人看见了,可怜他,还气直骂,想喊马车停了下来,合理的表示.希夫,低声说:“别哭,别喊,让他们走.“马车走远了,他站在路边,他想:这条路太窄了,行人和那么多,为什么不能运输结构变化?马车沿着应该剪掉一半,四个轮子前后两个轮子……他认为,家将开始进行设计.经过反复实验,在1791年第一个走“特洛伊木马”的汽车.最早的自行车是木制的,其结构简单,没有开车,也没有转向装置,骑自行车步行困难,改变方向,只能把车当车.即便如此,当希夫,骑自行车去公园骑,所有在场的人是相当惊人的,令人印象深刻.