Special railways refer to railways managed by enterprises or other units exclusively for their internal transportation.

专用铁路是指由企业或者其他单位管理，专为本企业或者本单位内部提供运输服务的铁路。

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According the road layout, entrances are put on the east and west side to link the external and internal transportation.

根据广场内部道路网络布局，于东西两侧设出入口，将内外交通联系起来。

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Oil is found in relatively few places, and its energy density, pumpability and ease of use in internal-combustion engines makes it particularly well suited as a transportation fuel.

储有石油的地方相对较少，因其能量密度、泵送能力及在内燃机上的易用性使其特别适宜成为运输燃料。

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The Metropolitan Transportation Authority will begin an internal debate on its advertising policies in earnest on Thursday, just more than two months after its refusal of an anti-Muslim ad campaign was ruled to have violated the First Amendment of the Constitution.

WSJ: MTA Ad Policy Faces Overhaul

Oil is found in relatively few places, and its energy density, pumpability and ease of use in internal-combustion engines makes it particularly well suited as a transportation fuel.

ECONOMIST: Unconventional gas

On Tuesday, the U.S. National Transportation Safety Board said it was conducting a chemical analysis of internal short circuiting and thermal damage of the battery that caught fire in Boston.

NPR: US Regulator Asks Boeing For Full Battery History