1. All these findings seem to indicate that they are the remains of an ancient civilization that was every bit as advanced as other more famous civilizations of the time. 所有这些发现似乎表明，它们是一个古代文明的遗迹，与当时其它更著名的文明一样先进。
2. Kukulkan is resource-poor, which along with the innate conservatism of its inhabitants inhibits its venerably ancient civilization from developing technologically. 库库尔坎是一个资源贫乏的地方，再加上当地居民天生的保守主义，阻碍了其令人尊敬的古老文明在技术上的发展。
3. Is there evidence of an ancient civilization on Mars? 火星上是否有证据表明那里存在过古代文明呢？
4. As a Chinese, I'm proud of our ancient civilization. 作为一个中国人，我为我们的古代文明感到自豪。
5. China is an ancient civilization country with a long history. 中国是一个有着悠久历史文化的文明古国。
