1. What is the altitude of this village?
    这个村子海拔多少?

2. The book features more than 500 maps that show areas of genetic similarity — much as places of equal altitude are shown by the same color on other maps.
    此书的一大特点是提供了500多幅图，显示相同的遗传基因所处的区域。这很像其他地图上用同样的颜色表示同样海拔高度的地区。

3. At this altitude, the air is very thin and the weather is uncertain.
    在这样高度上，空气十分稀薄，气候变幻无常，

4. In fewer than five minutes, we'd reached an altitude of 35,000 feet.
    不到五分钟，我们就升到了35,000英尺的高度。