樓上的用法和樣例：
例句
-
他在樓上睡覺(jué)。
He was upstairs in bed. -
我們可以聽(tīng)見(jiàn)孩子們在樓上乒乒乓乓地跑來(lái)跑去。
We could hear the children banging about upstairs. -
她時(shí)而到樓上看看他是否還在睡著(zhù)。
Every now and again she went upstairs to see if he was still asleep.
