Clearly, it's a plain that it's been volcanically active, and all of us are very hopefully that some places on Mars we could find hydrothermal vents.

显然地，这是个有山活动的平原，我们所有的人都非常希望在地方我们能够找到热液喷口。

Jupiter's moon Io is believed to be the most volcanically active place in our solar system so NASA would like to find out more about the eruptions that happen there.

据称，木的卫艾奥是太阳系中山活动最活跃的球，因此NASA希望进步了解那里的山喷发。