adv.在二楼；在楼上；在较高地位
adj.二楼的；在楼上的；高度的
Come down to us we can't hear you upstairs. 下来到我们这儿来，你在楼上我们听不清楚。
I can hear somebody moving about upstairs. 我可以听见有人在楼上来回走动。
Mary's upstairs. 玛丽在楼上。
We could hear the children banging about upstairs. 我们可以听见孩子们在楼上乒乒乓乓地跑来跑去。
