大熊猫的基地作文怎么写？( 八 )

参考网站：7月28日1.都江堰
dujiangyan irrigation system
在都江堰水利工程修建于公元前256年，在这之前，成都平原一到雨季就遭受洪灾，一到春耕季节又没水灌溉。都江堰水利工程,科学有效地解决了灌溉、泄洪和排沙的问题，从此，成都平原成为了一个水旱从人，不知饥馑的天府之国。
before the dujiangyan irrigation system was built in 256 bc.before this chengdu plain always suffer flood in rainy season and drought in dry season.the irrigation project resolved the problems of irrigation, flood discharging and sands reduction effectively, breeding chengdu plain as the land of abundance.都江堰水利工程在中国乃至世界都是一项非常伟大的水利工程。它的伟大主要体现在以下几点：其一，它是历史上最悠久的水利工程，有着2268年的历史。其二，都江堰水利工程是世界上唯一仅存的一座无坝引水，自流灌溉的水利工程。不是拦水而是引水，不是改变而是顺应自然。其三都江堰水利工程是世界上设计最科学、布局最合理的水利工程。都江堰水利工程渠首的三大主体工程由鱼嘴、飞沙堰、宝瓶口构成。
dujiangyan irrigation project is a great project with much top fame in the world.firstly, it is the oldest irrigation project in the world with a history of 2268 years.secondly, it is the only existing irrigation project without dam but can divert water for irrigation automatically.it does not stop the water but lead the water; it does not change the nature but obey the nature.thirdly, it is an irrigation project with the most scientific design and reasonable composition.the head part of dujiangyan was formed by three main parts yuzui dividing dyke, feishayan spillway, and baopingkou water inlet.the perfect combination of the three parts has continued the service of dujiangyan irrigation project for thousands of years.
整个景区由离堆古园、渠首三大主体工程以及二王庙三部分组成。现在我们就位于离堆古园。离堆古园占地80亩，古代是一座私家园林，1931年扩建后，对外开放。都江堰与青城山于2000年11月被联合国教科文组织列入世界文化遗产名录。2005年，都江堰作为大熊猫栖息地的一部分被列为世界自然遗产。
this scenic area consists of three parts: the first is lidui ancient park, where we are now; the second is irrigation project; and the last is er wang temple.lidui ancient park covers an area of 80mu.it was a private garden strictly for rich and powerful families.it was finally opened to the public in 1931.dujiangyan and mt.qingcheng were added to the list of the world cultural heritage by unesco in nov.2000.in 2005, as a part of the habitat of giant panda, dujiangyan was added to the list of world natural heritage.
我们现在所看到的就是都江堰水利工程主体部分的宝瓶口，它位于玉垒山和离堆公园之间，宽20米。宝瓶口是内江进入成都平原的咽喉，严格控制着进入成都平原的进水量。我们可以来打个比方，宝瓶口就像我们的喉咙，喝水时，不论每次喝入多少，只有定量的水可以通过。这就是宝瓶口的工作原理。在当时没有炸药，也没有现代化的机械，李冰采用了“积新烧岩”的原始方法，燃烧树木将岩石烧红发烫，再用江水浇泼，由于热胀冷缩，石块炸裂，就这样炸一层，凿一层，化了8年的时间，凿开了这个宽20米的引水口。what we see now is baopinkou water inlet lying between mt.yulei and lidui park, with the width of 20 meters.it works as a check gate strictly controlling the water flow into chengdu plain.we can make an analogy; the baopingkou water inlet is like our throat.when we drink water, no matter how much we drink, only certain amount can go through at a time.that is the working principle of baopingkou.in