




版權說明:本文檔由用戶提供并上傳,收益歸屬內(nèi)容提供方,若內(nèi)容存在侵權,請進行舉報或認領
文檔簡介
1、,The Great Wall of China,The Great Wall of China is a series of stone and earthen fortifications in northern China, built originally to protect the northern borders of the Chinese Empire against intrusions by various nomadic groups. Several walls have been built since the 5th century BC that are ref
2、erred to collectively as the Great Wall, which has been rebuilt and maintained from the 5th century BC through the 16th century. One of the most famous is the wall built between 220206 BC by the first Emperor of China, Qin Shi Huang. Little of that wall remains; the majority of the existing wall was
3、 built during the Ming Dynasty.,The Great Wall stretches from Shanhaiguan in the east, to Lop Nur in the west, along an arc that roughly delineates the southern edge of Inner Mongolia. The most comprehensive archaeological survey has recently concluded that the entire Great Wall, with all of its bra
4、nches, stretches for 8,851.8km. This is made up of 6,259.6km sections of actual wall, 359.7km of trenches and 2,232.5km of natural defensive barriers such as hills and rivers.,The Chinese were already familiar with the techniques of wall-building by the time of the Spring and Autumn Period. During t
5、he Warring States Period from the 5th century BC to 221 BC, the states of Qin, Wei, Zhao, Qi and Yan all constructed extensive fortifications to defend their own borders. Qin Shi Huang conquered all opposing states and unified China in 221 BC, establishing the Qin Dynasty. To protect the empire agai
6、nst intrusions by the Xiongnu people from the north, he ordered the building of a new wall to connect the remaining fortifications along the empires new northern frontier. Most of the ancient walls have eroded away over the centuries, and very few sections remain today.,Later, the Han, Sui and Jin d
7、ynasties all repaired, rebuilt, or expanded sections of the Great Wall at great cost to defend themselves against northern invaders. Towards the end of the Ming Dynasty, the Great Wall helped defend the empire against the Manchu invasions. However, when the gates at Shanhaiguan were opened by Wu San
8、gui, the Manchus quickly seized Beijing and established the Qing Dynasty. Under Qing rule, Chinas borders extended beyond the walls and Mongolia was annexed into the empire, so construction and repairs on the Great Wall were discontinued.,從春秋時代開始,我國古代人民便已熟悉城墻建造技術。在從公元前5世紀至公元前221年的戰(zhàn)國時期,秦、魏、趙、齊和燕各國建立廣
9、泛的防御工事來保衛(wèi)自己的邊界。公元前221年,秦始皇征服了所有反對國家而統(tǒng)一了個國,建立秦朝。為了避免匈奴人的入侵,他下沿著整個國家的北部邊界建立新的城墻,以連接殘留的防御工事。古城墻大部分已侵蝕了數(shù)百年,只有極少數(shù)路段保留至今。后來的長城由漢,隋和晉朝以極大的代價來修理,改建或是擴建長城以捍衛(wèi)自己免于北方的侵略。在15世紀40-60年代,明朝修建了所謂的“遼東長城”。明朝末年,長城抵御了滿清帝國入侵。然而,當山海關隘口被吳三桂打開后,滿族人迅速占領了北京,建立了清朝。在清朝統(tǒng)治下,中國的邊界一直延伸到長城之外和蒙古,所以建造和維修長城的工事被停止。,1. North Pass of Juyo
10、ngguan pass, known as the Badaling. Made of stone and bricks from the hills, this portion of the Great Wall is 7.8meters (25.6ft) high and 5meters (16.4ft) wide. “北通”居庸關,也就是八達嶺。由石頭和磚塊砌成,這部分長城高7.8米(25.6英尺)寬5米(16.4英尺)。 2. “West Pass” of Jiayuguan . This fort is near the western edges of the Great Wall
11、. “西通”嘉峪關。這個要塞靠近長城的西部邊緣。 3. East Pass of Shanhaiguan. This fort is near the eastern edges of the Great Wall. “東通”山海關。這個要塞靠近長城的東部邊緣。,The Great Wall is the mightiest work of man, the only one that would be visible to the human eye from the moon. - Richard Halliburton 長城是人類最偉大的工程,是唯一可以從月球上直接用肉眼看到的東西。 理
12、查德哈里伯頓。 The Great Wall is a maximum 9.1 m (30 ft) wide, and is about the same color as the soil surrounding it. Based on the optics of resolving power, only an object of reasonable contrast to its surroundings which is 70 mi (110 km) or more in diameter would be visible to the unaided eye from the m
13、oon. The apparent width of the Great Wall from the moon is the same as that of a human hair viewed from 2 miles away. To see the wall from the moon would require spatial resolution 17,000 times better than normal vision. Unsurprisingly, no lunar astronaut has ever claimed to have seen the Great Wall
14、 from the moon. 長城最寬是9.1米(30英尺),顏色和周圍土壤的顏色相似?;诠鈱W分辨能力,人們從月球上直接用肉眼可以看到直徑70英里(110公里)以上的物體。從月球表面看長城的寬度就好比從2英里外看人類的頭發(fā)一樣。要從月球上看到長城的話將需要優(yōu)于正常視力17,000倍的空間分辨率。因此,月球的宇航員從未聲稱已經(jīng)從月球上看到長城也就不奇怪。,A more controversial question is whether the Wall is visible from low earth orbit (an altitude of as little as 100 miles (160 km). NASA claims t
溫馨提示
- 1. 本站所有資源如無特殊說明,都需要本地電腦安裝OFFICE2007和PDF閱讀器。圖紙軟件為CAD,CAXA,PROE,UG,SolidWorks等.壓縮文件請下載最新的WinRAR軟件解壓。
- 2. 本站的文檔不包含任何第三方提供的附件圖紙等,如果需要附件,請聯(lián)系上傳者。文件的所有權益歸上傳用戶所有。
- 3. 本站RAR壓縮包中若帶圖紙,網(wǎng)頁內(nèi)容里面會有圖紙預覽,若沒有圖紙預覽就沒有圖紙。
- 4. 未經(jīng)權益所有人同意不得將文件中的內(nèi)容挪作商業(yè)或盈利用途。
- 5. 人人文庫網(wǎng)僅提供信息存儲空間,僅對用戶上傳內(nèi)容的表現(xiàn)方式做保護處理,對用戶上傳分享的文檔內(nèi)容本身不做任何修改或編輯,并不能對任何下載內(nèi)容負責。
- 6. 下載文件中如有侵權或不適當內(nèi)容,請與我們聯(lián)系,我們立即糾正。
- 7. 本站不保證下載資源的準確性、安全性和完整性, 同時也不承擔用戶因使用這些下載資源對自己和他人造成任何形式的傷害或損失。
最新文檔
- 皮斗篷企業(yè)ESG實踐與創(chuàng)新戰(zhàn)略研究報告
- 湖北省新高考聯(lián)考協(xié)作體2025屆高三下學期高考模擬(一)數(shù)學試卷【含答案解析】
- 模塊化放射治療室家具企業(yè)制定與實施新質(zhì)生產(chǎn)力戰(zhàn)略研究報告
- 床上用紡織品超市企業(yè)ESG實踐與創(chuàng)新戰(zhàn)略研究報告
- 含乳型果凍企業(yè)數(shù)字化轉型與智慧升級戰(zhàn)略研究報告
- 二零二五年度國際會展中心租賃及組織服務合同
- 2025年度綠色辦公理念文員聘用合同
- 二零二五年度個人兼職勞動合同(健康養(yǎng)生顧問)
- 2025年度藝人演出財務管理協(xié)議
- 二零二五年度健康醫(yī)療大數(shù)據(jù)委托投資協(xié)議
- 染色體實驗室質(zhì)量控制
- NB/T 10742-2021智能化綜采工作面設計規(guī)范
- YY/T 0967-2022牙科學旋轉和往復運動器械的桿
- GB/T 2934-2007聯(lián)運通用平托盤主要尺寸及公差
- GB/T 29334-2012用于非石油基液壓制動液的汽車液壓制動缸用的彈性體皮碗和密封圈
- GB/T 14706-1993校對符號及其用法
- 高二數(shù)學平面向量的基本定理
- 高中美術-美術鑒賞《審美自律》
- 強讀和弱讀-(課堂)課件
- 裕興新概念英語第二冊筆記第42課
- 管理高爾夫實戰(zhàn)訓練課程課件
評論
0/150
提交評論