分类：教育/科学-外语学习
问题：麻烦翻译一下Whenonelooksbackuponthefif 
When one looks back upon the fifteen hundr years that are the life span of the English language, he should be able to notice a number of significant truths. The history of our language has always been a history of constant change-at times a slow, almost imperceptible change, aWhen one looks back upon the fifteen hundr years that are the life span of the English language, he should be able to notice a number of significant truths. The history of our language has always been a history of constant change-at times a slow, almost imperceptible change, at other times a violent collision between two languages.另外，欢迎来我的主页看看。
回答：当我们回顾英语在过去的150年的生命历程时，会有许多重大的发现。我们语言的历史是一个持续变化的历史-在其缓慢，微妙变化的同时也有两种语言之间的猛烈碰撞。