These methods have revealed some unexpectedly immense formations in the deepest parts of the mantle; the largest of these is a buoyant mass of hot rock directly below Africa's southern tip.

这些方法在地幔最深处揭示了一些意想不到的巨大构造；其中最大的一块是在非洲南端正下方的一块热岩。

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The interaction of stress wave with tunnel structures in rock mass is a complex problem, which up to now has not been solved completely.

应力波与隧道衬砌的相互作用问题为岩石力学的一个十分复杂的问题，到目前为止还没有得到圆满的解决。

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The physical and mechanical interaction of groundwater soil rock mass in karst collapse evolution is discussed elaborately and a coupling mode is established and studied.

分析了岩溶塌陷演化过程中物理力学上的水土岩相互作用，并对作用模式进行了探讨。

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Last April, officials in Little Rock devised a doomsday plan in case of a mass leak or explosion at the arsenal.

ECONOMIST: Pine Bluff prepares for disposal

So he lit out for the Berkshires and joined the board of Simon's Rock College, a liberal arts school in Great Barrington, Mass.

FORBES: Magazine Article

Part of an outdoor art installation called Levitated Mass, this unlikely local celebrity has unified Southern California, from its humble beginnings in a rock quarry to its final placement at the museum, with a much-buzzed-about unveiling in June.

BBC: LA��s granite giant