downstairs
adv.顺楼梯而下;在楼下;往楼下
n.楼下(尤指地面的一层)
adj.楼下的
派生词： downstairs
例句：
He could hear someone creeping around downstairs.
他听得见有人在楼下蹑手蹑脚走来走去的声音。
Alerted by a noise downstairs, he sat up and turned on the light.
楼下的响声使他警觉，他坐起来打开灯。
She rushed downstairs and burst into the kitchen.
她冲下楼闯进厨房。
I crept out of bed in the dead of night and sneaked downstairs.
深夜我悄悄地从床上爬起来，蹑手蹑脚地下了楼。