无顶的塔不断显现又隐匿，盲目的直插云霄。

Roofless towers appeared and disappeared, thrusting blindly upward.

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一顶帐篷由插杆、木栓和篷顶布组成。

A tent consists of poles, pegs and a fly sheet.

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地质界面模型是由煤层的顶底板插值曲面经煤层边界和断层曲面裁剪而成的，地表面模型是对原始地表数据和矿坑数据进行三角剖分得到的三角形网格。

The interpolation face of coal seams is trimmed by boundary and the closed polygons of up and down faulted blocks to form the deposit interface model. The earths surface model is founded.

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