秦朝没有水泥技术，那么万里长城是用什么修的呢？

问:秦朝没有水泥技术，那么万里长城是用什么修的呢？

秦朝修的长城主要是夯土，只有主要的地方才用砖修，现在的青砖长城是明朝修的，差了一千六七百年。

但是，明朝也沒有水泥技术，他们是怎么修长城的？

除去前面的朋友们说的用石灰，还有粘土糯米浆之外，还有一项主要技术。

我们村在文革时期拆了一座明末清初的古庙，这座庙完全是用古青砖砌成，用的粘合剂就是白灰。但这白灰只薄薄的一两毫米厚，而砌的非常结实，一面大墙几十人一齐用力推都推不倒，就是一块砖一块砖的拆下来的，白灰也很容易刮掉。

原来这座庙用的是磨砖对缝的技术，用人工把青砖磨的超平，和玻璃一样平，两块砖垒一起只看到头发丝的一线之缝，这样砌起的墙就是不用粘合剂，也是很牢固不容易推倒的，何况是用了做水泥主要原料的石灰？

古城墙的牢固，其中很重要的技术就是磨砖对缝。

没有水泥秦朝用的是:沙丶土丶碎石用粽米打成浆搅拌成混凝土，比水泥还坚固，万里长城就是用这种方法和石灰修建而成的。

长城英语介绍

In the north of China, there lies a 6,700-kilometer-long (4,161-mile-long) ancient wall. Now well-known as the Great Wall of China, it starts at the Jiayuguan Pass of Gansu Province in the west and ends at the Shanhaiguan Pass of Hebei Province in the east. As one of the Eight Wonders in the world, the Great Wall of China has become the symbol of the Chinese nation and its culture.

Lots of beautiful legends and stories about the Great Wall took place following along the construction, and since that time these stories have spread around the country. Those that happened during construction are abundant, such as Meng Jiangnu's story and the legend of the Jiayuguan Pass. Meng Jiangnu's story is the most famous and widely spread of all the legends about the Great Wall. The story happened during the Qin Dynasty (221BC-206BC). It tells of how Meng Jiangnu's bitter weeping made a section of the Great Wall collapse. Meng Jiangnu's husband Fan Qiliang was caught by federal officials and sent to build the Great Wall. Meng Jiangnu heard nothing from him after his departure, so she set out to look for him. Unfortunately, by the time she reached the great wall, she discovered that her husband had already died. Hearing the bad news, she cried her heart out. Her howl caused the collapse of a part of the Great Wall. This story indicates that the Great Wall is the production of tens of thousands of Chinese commoners.
多一点行不 有100字的 译文要吗