n. 窗帘，门帘,帐幕之物，幕布,启幕，落幕
vt. 给（窗户或房间）装上帘子,掩蔽
curtain可以用作名词
curtain的基本意思是“窗帘”,此时是可数名词,有复数形式。
curtain引申可作“幕”解,通常用单数。
curtain用作名词的用法例句
The curtain was suddenly drawn and a bright light shone in.突然窗帘拉了开来，一道强光照了进来。
She came upon a low curtain she had not noticed before.她发现刚才没有注意到的一个低垂的门帘。
She kept peering through the side curtain.她不时地从旁边的幕帐向外窥视。
1、I found myself behind a curtain, necking with my best friend'swife.
我意识到自己在帘子后面吻着至友的妻子。
2、A curtain acted as a divider between this class and another.
帘子作为分隔物将这间教室和另一间分开。
3、The shops also offer a keenly priced curtain-making service.
这些商店也提供价格优惠的窗帘制作服务。