不使用升降梯向下穿越一层。

Traverse down a Level without using an elevator.

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沿着“箱”一侧设一道不宽的天井升降梯道。

A raise catwalk is made up along the side of the "chest".

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沿着“箱”一侧设一道不宽的天井升降梯道。

A raise catwalk is made up along the side of the "chest".

youdao