translation.en: And when you dive into that rift valley, that's where the action is because literally thousands of active volcanoes are going off at any point in time all along this 40,000 mile range.
translation.zh: 当你潜入那个地堑中，你将来到一个非常刺激的地方 因为理论上讲，数以千计的活火山 在任何时候都有可能爆发， 所有这4000英尺的范围。