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英语翻译Thousands of years ago man used handy rocks for its surg

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英语翻译
Thousands of years ago man used handy rocks for its surgical operations.Later he used sharp bone or horn,metal knives and more recently,rubber and plastic.And that was where we stuck,in surgical instrument terms,for many years.In the 1960s a new tool was developed,one which was,first of all,to of great practical use to the armed forces and industry,but which was also,in time,to revolutionize the art and science of surgery.
请问这句话如何翻译,
要人工翻译,谢绝软件翻译。
英语翻译Thousands of years ago man used handy rocks for its surg
几千年前,人们使用小巧的石头来进行外科手术,后来,人们又使用过锋利的骨头、角、金属小刀,近代又改用橡胶和塑料.到此,我们的医疗器械发展停滞了很久.1960年代,人们发明了一种新的工具,在军队和工业上很有实用价值,并且在外科手术领域掀起了革命.