upstairs基本解释
adv,在楼上，向楼上；上楼；往楼上,同近
I went upstairs and had a shower..我上楼冲了个澡。
在楼上，向楼上；上楼；往楼上英释advadvtowards or on an upper floor in a building
go upstairs,上楼；爬楼梯.短语
