顾名思义，太空升降梯是一根很长的电缆固定在地面的一端，另一端高高地延伸到太空中，就像一条从旋转的橙子中伸出的辐条那样伸出地球。

The space elevator is exactly what its name says it is: a long cable anchored at one end to the ground and at the other end high in space, protruding from the planet like a spoke in a rotating orange.

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放下右/左舷硬梯，固定好扶手栏杆和舷梯下的安全网。

Lower the starboard / port gangway, secure guardrail and fix the safety net under the gangway.

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一种滚轮，主要是由一阶梯状轮轴、一滚轮、一轮盖及一惯用固定片所组成，并配合一垫盖以供装设于箱体；

The utility model relates to a roller design, which is mainly characterized in that a staircase-shaped wheel axle penetrates into a roller shaft hole;

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