人类的时代
人类的成就体现在各个方面.磨石取火的重要性不亚于把人类送往月球.远古人学会使用石制工具和生火,标志着现代社会的开始.之后的种种发现,例如青铜,铁,蒸汽,电能等等,使社会进一步发展并成就了历史.这些发明如此重要,所以我们常根据各个时期的最新科技把人类历史划分为如下几个时期:石器时代,青铜时代,铁器时代,等等.
original text:
The Ages of Man
Human achievements come in all shapes and sizes.Knocking two rocks together can be just as important as sending a man to the moon.When ancient humans learnt to use stone tools and make fire,it meant the beginning of modern society.Later discoveries------bronze,iron,steam,electricity,to name a few------continued the development of society and shaped history.So important were these achievements that we often divide human history into time periods named after the latest technology of the time:the Stone Age,the Bronze Age,the Iron Age and so on
