Earth's internal heat, fueled by radioactivity, provides the energy for plate tectonics and continental drift, mountain building, and earthquakes.
地球内部因放射而产生的热量为板块运动、大陆漂移、造山运动和地震提供了能量。
This region marks where heat rising from the leading edge of the plume is pushing rock up, as tectonic forces cause the plume to drift eastward.
这个区域标志来自火山柱主要边缘的热度正在把岩石往上拱，如构造作用力导致火山柱向东方漂移。
Practical problems such as heat generation and drift however mean that such a device would not normally be used except for the very simplest applications.
实际上由于发热和漂移这样的设备一般不被使用，除非一些最简单的应用中。
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