The mantle's motions, analogous to those in a pot of boiling water, cool the mantle by carrying hot material to the surface and returning cooler material to the depths.

地幔的运动类似于一壶沸水的运动，它把热的物质带到表面，再把较冷的物质带到深处，从而使地幔冷却。

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The cause appears to be in part greater turbulence in the urban atmosphere as hot air rises from the built-up surface.

部分原因似乎是热空气从楼宇密集的表面上升，造成城市大气的更大湍流。

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The surface mark of an established plume is a hot spot—an isolated region of volcanoes and uplifted terrain located far from the edge of a surface plate.

一个已形成的烟羽的表面标志是一个热点——一个远离表面板块边缘的火山和隆起地形的孤立区域。

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"We think that magnetic activity on or around the stellar surface creates the super-hot plasma, " Hamaguchi said.

MSN: Newborn star's 'heartbeat' seen by X-ray telescopes

Many of the dead trees are still standing, and can serve as ladder fuels that transform relatively cool surface fires into hot, fast-moving crown fires that leap from treetop to treetop.

FORBES: Forests and Climate Change: a Combustible Combination

Cold ocean water leaks through the rock, hits the red-hot underground lava and bubbles up to the surface.

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