階かい段だんを下おりる

expression, ichidan verb

go down the stairs; descend the stairs

A set phrase meaning to physically walk or move down a flight of stairs. The verb おりる (下りる/降りる) is intransitive, but the phrase uses を to mark the path of movement.

• 彼かれは急いそいで階かい段だんを下おりた。

  He hurried down the stairs.

• エレベーターが故こ障しょうしたので、階かい段だんを下おりなければならなかった。

  The elevator was out of order, so I had to go down the stairs.