1.In addition to the internal variability of the global climate system itself, there is the added factor of external influences, such as volcanoes and solar activity. (阅读 托福-11)

除全球气候系统本身的内部变化之外，还存在其他外部的影响因素，如火山和太阳活动。

2.Venus and Earth are similar in size and mass, so Venusian volcanoes may well have outgassed as much water vapor as on Earth, and both planets would have had about the same number of comets strike their surfaces. (阅读 托福-11)

金星和地球的大小和质量都差不多，所以两个星球的火山排出的水蒸气可能是一样多的，而且撞击到两个星球的彗星数量也相当。

3.Are the volcanoes on the Venus still active?(听力 托福-12)

金星上的火山是活火山吗？

4.Most of the largest volcanoes are associated with the Tharsis bulge, but many smaller ones are found in the northern plains.(阅读 托福-11)

那些最大的火山中的大部分都与塔尔西斯隆起有关，但是很多稍小的火山都分布在北部平原地区。

5.This one cluster of volcanoes at the northern end of the rift and another cluster of volcanoes at the southern end. (听力 托福-12)

这条裂缝北端的有一组火山和南端也有一组火山。