These beams, known as la foret (the forest) because of their density, formed the cross-shaped roof that ran the length of the central part of the cathedral.

这些因其密度而被著称为 la foret（森林）的梁，组成了横跨大教堂中心部分的十字形屋顶。

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Part of that evidence comes from its density and part from hundreds of chunks of rock, in the form of meteorites, that have been examined by Earth-bound scientists.

该证据的一部分来源于灶神星的密度，另一部分来源于数以百计以陨石形状存在的大块岩石，地球科学家们已对这些岩石进行过研究。

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By making small circles with each part of your body, water is re-introduced between the sand and clay particles, reducing the density and making it easier for someone to heave you out.

全身小幅度转圈，水会重新流入沙和粘土颗粒之间，从而减小流沙密度，让别人容易将你拉出来。

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Every 12 months or so GM develops a new generation of fuel cells, and recent improvements in power density and part streamlining are impressive.

FORBES: On The Cover/Top Stories

Still, density is only part of the solution.

WSJ: To Build Creative Cities, the Sky Has Its Limit by Richard Florida

They also have limited options to zone land for high-density construction, due in part to grassroots opposition to existing residential neighborhoods.

FORBES: New Geographer