YOU SAID:

Are we going over or under the other underground stairway up or down?

INTO JAPANESE

か上または他の地下の階段下を上下

BACK INTO ENGLISH

Or up and down the stairs in the above or other underground

INTO JAPANESE

上記やその他の地下の階段の上下や

BACK INTO ENGLISH

And the top and bottom of the stairs in the basement of the above or any other

INTO JAPANESE

上記やその他の地下の階段の上下と

BACK INTO ENGLISH

And the top and bottom of the stairs in the basement of the above or any other