In this densely forested country, wood was the most important building material up to the premodern age.

在这个密林遍布的国家，在近代以前，木材是最重要的建筑材料。

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Google, which is building an entire cloud-based operating system, and other companies have come up with ways to store some remote material on your local device.

正在建设完全云操作系统的谷歌公司和其他公司已经想出了将某些远程资料保存在本地设备上的方法。

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Up to now, the engineering technology, material craftwork, vacuum and auto-control technologies required for building the ETT have been mature.

自提出设想以来几十年过去了，建设ETT所需的工程技术、材料工艺、真空技术和自动控制技术等均已成熟。

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The technology works by building up layer upon layer of material - typically plastic - to build complex solid objects.

BBC: Working gun made with 3D printer

Those white dwarf stars that find themselves near a "companion" star can draw material from their neighbour, building up to a critical mass and eventually sparking nuclear fusion again in a nova.

BBC: Gamma rays from nova explosion surprise astronomers

And the reduction in outer material gives the building an excellent chance of going up faster and for less money.

FORBES: Move up http://i.forbesimg.com t Move down