Again, that verb with the –TE on the end means somebody’s telling you to do something.
NOBORU/NOTTE = climb/ascend
ORIRU/ORITE = descend
So someone might tell you "Kaidan o nobotte" or "Kaidan o orite"

NOBORU and ORIRU also used for vehicles (trains, buses, bicycles, motorcycles, etc. Skateboards/Surfboards/Rollerblads? Ask when we get to Japan.)

You'll find taxis at the takushi noriba and buses at the basu noriba and you basu o oriru when getting off the bus.

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