轮子旋转时需要承受巨大的和不断变化的压力，所以要使结构更坚固，钢的部分要用螺栓连接，而不是焊接在一起。

The wheel would need to withstand immense and constantly changing stresses as it rotated, so to make the structure more robust, the steel sections were bolted rather than welded together.

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由于文件名和坐标绑定在一起，因此需要准确地将已旋转的图像块转换成适当的旋转后位置。

This development of a filename tied to a coordinate is required to accurately translate the rotated tiles to their proper post-rotation position.

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不要将钉子和快速旋转锯片混淆在一起。

Nails and rapidly spinning saw blades are not a good mix.

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