上海草根
中国四大发明的英文：The four great inventions of ancient China
一、 invention
英 [ɪn'venʃ(ə)n] 美 [ɪn'vɛnʃən]
n. 发明；发明物；虚构；发明才能
Such changes have not been seen since the invention of the printing press.
自从发明了印刷机，这种变革还没有出现过。
二、ancient
英 [ˈeɪnʃənt] 美 [ˈenʃənt]
adj. 古代的；古老的，过时的；年老的
n. 古代人；老人
They believed ancient Greece and Rome were vital sources of learning.
他们认为古代希腊罗马是知识的重要发源地。
具体四大发明的英文：
1、papermaking
美 [ˈpæpərˌmeɪkɪŋ]
造纸；造纸术；抄造；抄纸；第五章纸的抄造
Straw can be used both for fodder and for papermaking.
草可以做饲料，也可以造纸。
2、gunpowder
英 [ˈɡʌnpaʊdə(r)] 美 [ˈɡʌnpaʊdər]
n.火药
Gunpowder was used in China as far back as the 11th century.
远在公元11世纪，中国已使用火药。
3、printing techniques
英 [ˈprɪntɪŋ tɛkˈniːks] 美 [ˈprɪntɪŋ tɛkˈniks]
印刷技术；印刷术
In the future, we will have a better a better understanding if our world through the effect of globalization, new media, cheaper printing techniques and so on.
在未来，透过全球化的影响、新媒体、更廉价的印刷技术，我们将有一个更好的更深入的了解我们的世界。
4、compass
英 [ˈkʌmpəs] 美 [ˈkʌmpəs]
n.罗盘；罗经；指南针；罗盘仪；圆规；两脚规；范围；范畴；界限
Without a compass, it is easy to lose one's bearings in the woods.
在森林中没有指南针是容易迷失方向的。
Z.L.小姐
Gunpowder 火药Handgun from the Yuan dynasty, circa 1300s.Main article: History of gunpowderThe prevailing academic consensus is that gunpowder was discovered in the 9th century by Chinese alchemists searching for an elixir of immortality. By the time the Song Dynasty treatise, Wujing Zongyao (武经总要), was written by Zeng Gongliang and Yang Weide in AD 1044, the various Chinese formulas for gunpowder held levels of nitrate in the range of 27% to 50%. By the end of the 12th century, Chinese formulas of gunpowder had a level of nitrate capable of bursting through cast iron metal containers, in the form of the earliest hollow, gunpowder-filled grenade bombs.In AD 1280, the bomb store of the large gunpowder arsenal at Weiyang accidentally caught fire, which produced such a massive explosion that a team of Chinese inspectors at the site a week later deduced that some 100 guards had been killed instantly, with wooden beams and pillars blown sky high and landing at a distance of over 10 li (~2 mi. or ~3.2 km) away from the explosion.By the time of Jiao Yu and his Huolongjing in the mid 14th century, the explosive potential of gunpowder was perfected, as the level of nitrate in gunpowder formulas had risen to a range of 12% to 91%, with at least 6 different formulas in use that are considered to have maximum explosive potential for gunpowder. By that time, the Chinese had discovered how to create explosive cannonballs by packing their hollow shells with this nitrate-enhanced gunpowder.
优质英语培训问答知识库
