The companionway refers to a set of stairs on a ship.

舱梯指的是船上的一组扶梯。

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We went up a set of stairs on the outside of the building in order to investigate.

为了一探究竟，我们沿着楼外的梯子爬了上去。

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For example if ASIMO came to a set of stairs it would stop, and not attempt to walk down them.

例如，如果阿西莫靠近了一个楼梯，它就会停下来，不会试图走下去。

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On the upper floor there was damp and a set of stairs which contravened building regulations.

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In the show, his character falls down a set of stairs three times.

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The three of them walk down a set of stairs to the basement, where the seafood is kept in coolers.

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