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 quake happened along a seam in the planet's surface where the Pacific Ocean floor is diving beneath the tectonic plate carrying northern Japan (see 'Collision zone').

这次地震是沿着地球表面的一条缝隙发生的。 在这条缝隙处，太平洋板块正俯冲入另一地壳板块下部，而这块地壳板块正承载着日本的北部地区（见”碰撞带“）。

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It returned to the surface with a scrap of paper carrying a message scrawled in red felt-tip pen: "We're alright in the shelter, the 33 of us."

画面捕捉到了一张带有信息的皱皱巴巴的纸条，上面用红记号笔潦草的写着：“我们在下面安然无恙，我们33个人都是。”

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The official said Israeli fighter jets targeted a Syrian government convoy carrying surface-to-air missiles bound for the militant group Hezbollah in Lebanon.

CNN: Syrian TV: Israeli rockets target Damascus suburb

Meanwhile, a U.S. official said reports that Israel had struck a Syrian research facility were wrong, instead saying warplanes hit only one target: a convoy carrying surface-to-air missiles.

CNN: Iran, Syria warn of retribution for Israeli airstrike

News agency reports, citing US sources, speak of an arms convoy carrying sophisticated surface-to-air missile systems being attacked near to the Syria-Lebanon border.

BBC: Analysis: Strike adds complexity to tense region