A long backless sofa, especially one set with pillows against a wall.
长沙发，沙发床长无靠背的沙发，尤指靠墙有枕头的沙发
A couch that also goes for a bed.
一个可用作床的长沙发
A three-piece suite, ie a sofa and two armchairs
三件一套的沙发（一张长沙发及两张单座沙发）
A large sofa, often convertible into a bed.
坐卧两用沙发大沙发，经常可变换成床
subsiding onto the sofa/into an armchair
一屁股坐在长沙发[单座沙发]上.
a sofa that converts to a bed
可改为床铺的沙发.
a sofa that is convertible(into a bed)
可改（为床铺）的沙发
The sofa converts into a bed.
这张沙发可以改成床.
The sofa doubles as a bed
这只沙发又兼作床用。
The sofa can also function as a bed.
这沙发也可以当床.
The sofa functions as a bed at night.
这沙发在夜里可以当床。
a firm cushion, mattress, sofa, etc
结实的坐垫、 床垫、 沙发等
The sofa converts into a double bed
这张沙发可改为双人床。
In small houses beds are sometimes disguised as couches during the day
在狭小的住房里，有时白天将床改作长沙发椅。
a couch that is sided By low taBles.
紧靠矮桌的长沙发椅
the underneath of a car, shelf, sofa
汽车、 搁架、 长沙发的底部.
an upholstered bench.
装了沙发软垫的长椅。
upholster a sofa in leather
给长沙发装上皮革面