curtains
Curtains are pieces of material which you hang from the top of a window.
drapes
Her bedroom curtains were drawn.
她卧室的窗帘拉上了。
In a theatre, the curtain is the large piece of material that hangs in front of the stage until a performance begins.
The curtain rises towards the end of the Prelude.
前奏接近尾声时幕布升起。