翻译几句话 尽量用简单的词语

长城是中国也是世界上修建时间最长、工程量最大的一项古代防御工程。
The Great Wall was China also is in the world the construction time is longest, a resilience biggest item of ancient times defends the project。
延续不断修筑了2000多年，总计长度达 50000多千米，被列为中古世界七大奇迹之一。
The extension has constructed unceasingly for more than 2000 years, amounts to the length to amount to more than 50 thousand kilometers, is listed as one of Middle Ages world seven wonders of the world.