ad.

1. 在楼上；往楼上
   Henry lived upstairs.

   亨利住在楼上。

   She ran upstairs.

   她往楼上跑去。

2. 往更高的地位（尤指明升暗降）
   He went upstairs to become board chairman.

   他高升为委员会的主席。

3. 在高空；往高处
   The plane tried to avoid a storm by going upstairs.

   飞机往高空飞去，以避开风暴。

a.

1. 楼上的，在楼上的[B]
   Neighbors watched from their upstairs windows.

   邻居们从他们楼上的窗户往外看。

2. 高水平的，上层的
   He is skilled in upstairs politics.

   他精通上层政治。

n.

1. 楼上[M]
   They had to rent out the upstairs to make mortgage payments.

   他们不得不将二楼租出去以偿付抵押借款。

   The house has no upstairs.

   这房子只有一层。

adv.

adj.

n.