中国的四大发明包括指南针、火药、造纸术和印刷术。它们是中国在人类文明史上占有重要地位的标志之一。第一个指南针产生于战国时期(the Warring States Period),是利用天然磁石(natural magnet)来辨别方向的一种简单仪器。火药发

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问题     中国的四大发明包括指南针、火药、造纸术和印刷术。它们是中国在人类文明史上占有重要地位的标志之一。第一个指南针产生于战国时期(the Warring States Period),是利用天然磁石(natural magnet)来辨别方向的一种简单仪器。火药发明于隋唐时期,主要应用于军事领域。造纸术于东汉年间由蔡伦改进,使纸成为人们普遍使用的书写材料。印刷术,又称活字印刷术,大大促进了文化的传播。四大发明对世界经济的发展和人类文化的进步做出了巨大的贡献。

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答案 Four great inventions of China include the compass, gun powder, the paper-making technique and the printing technique. They are one of the marks that China occupies an important position in the history of human civilization. The first compass was invented during the Warring States Period. It was a simple device employing natural magnets to identify directions. Gunpowder was invented in Sui and Tang Dynasties and was mainly used in military areas. The paper-making technique was developed by Cai Lun in the Eastern Han Dynasty, making paper a commonly used writing material. The printing technique, also called movable type printing, promoted the spread of culture significantly. The four great inventions of China made tremendous contribution to the development of the world’s economy and the progress of the culture of mankind.

解析 1.第二句的主干是“它们是标志之一”,“标志(mark)”的定语很长,可用that引导的定语从句来修饰。
2.第三句“第一个指南针……”较长,可拆译为两个句子,前一句说明指南针产生的时间,后一句说明指南针的原理。“利用磁石来辨别方位的一种简单仪器”先译出主干“它是一种简单仪器”,再将长定语处理为现在分词短语employing…作后置定语。
3.第五句“造纸术于东汉年间……”中的“由蔡伦改进”提示要使用被动语态,“使纸成为人们普遍使用的书写材料”是造纸术改进的结果,可译为现在分词短语making...作结果状语。
4.末句的主干为“四大发明做出了巨大贡献”,注意与contribution搭配的是介词to,因此to后接名词短语,说明是对哪方面的贡献。
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