A huge flat area on the ground is called field. 地面上的大块平地叫做平原。

　　Then what is a huge high flat area? It is a plateau. 那大块的平坦高地又是什么？高原。

　　A plateau can be made by various activities. 高原可能是由多种活动造成的。

　　Volcanic activities, earthquakes or other events make plateaus. 火山活动、地震或其他事件都会导致高原的形成。

　　What is the biggest and highest plateau in the world? 世界上最大最高的高原是什么？

　　It is the Tibetan plateau. 它就是青藏高原。

　　How high is the Tibetan plateau? 青藏高原有多高？

　　It is higher than a small mountain but still it is not a mountain. 它比小山还高，但仍不是山脉。

　　There is less oxygen on a plateau than a normal field. 高原上的氧气比正常平原上的少。