写四大发明的英语作文、写出其中一个认为最有用的、用途是什么、80词

写四大发明的英语作文、写出其中一个认为最有用的、用途是什么、80词
写四大发明的英语作文、
写出其中一个认为最有用的、用途是什么、80词

写四大发明的英语作文、写出其中一个认为最有用的、用途是什么、80词
(1)
The mankind take the bearings to mainly depend the sun before the mariner's compass invent, moon etc. heavenly body, perhaps mountain stone tree etc. marking thing, however, these meanses for taking the bearings all has it to limit sex: is taken the bearings by heavenly body under the bad weather environment and then can't carry out, for example rainy day, fog day, cloudy day.But depend marking a thing to take the bearings can limit at inside small scope.
Afterwards people discover the south North Pole characteristic of loadstone but invented mariner's compass.Can take the bearings accurately under any environment thus.
Mariner's compass the biggest contribution is to promote maritime development, transport at the sea of flourishing and discover New Continent etc. the mariner's compasses all perform feats
(2)
Before compass invention the humanity takes one's bearings mainlydepends on the sun, heavenly body and so on the moon, or sign and soon mountain stone trees, however, these take one's bearings the methodall has its limitation: Depends on the heavenly body to take one'sbearings under the bad weather environment is unable to realize, forinstance rainy day, foggy day, cloudy day But depends on the sign totake one's bearings only can limit in the small scope
Afterwards the people discovered the magnet the south North Polecharacteristic has invented the compass Thus may accurate take one'sbearings under any environment
The compass biggest contribution promoted the navigation development,the sea transportation the new continent compass and so on wasdeveloped as well as discovered all had lasting achievements
都是关于指南针.四项全写的话、题材蛮大.

印刷术 Movable type the system of printing and typography that uses movable components to reproduce the elements of a document (usually individual letters or punctuation). The first known movable type ...

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印刷术 Movable type the system of printing and typography that uses movable components to reproduce the elements of a document (usually individual letters or punctuation). The first known movable type system was invented in China by Bi Sheng out of ceramic between 1041 and 1048 AD. Metal movable type was first invented in Korea during the Goryeo Dynasty (around 1230). This led to the printing of the Jikji in 1377 - today the world's oldest extant movable metal print book.

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