作业帮第一辆自行车发明者英语作文.60字
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/30 17:06:49
第一辆自行车发明者英语作文.60字
Lu about was born in this surname 507 BC to lose,name class.Because he is LuGuoRen,so people milnwood lu.Some books for or to lose a writing autumn plate.He is engaged woodworking work.When people to make trees to become already flat and smooth board,still do not have what good method.Lu in practice watched,imitate biological form,invented a lot of woodworking tools,such as saws,a plane,etc.How is the invention saws lu?According to legend once he into deep cut trees,carelessly,hand was a kind of grass leaf blade,he ripped off lightly touched,originally leaves both sides have 8-cm-long teeth,and his hand was these small teeth ripped,he also saw in a tree on there is a important weeds locust,two big BanYa also lined by many small teeth,so can quickly grinded blade.Lu from these two things got a inspiration.He thought,if such dentate tools,isn't also can quickly sawed through trees!Hence,he after many tests,finally invented the sharp saws,greatly improving the working efficiency
再问： 自行车的
再问： 自行车的