three-piece suite
noun [ C ] mainly UK uk/ˌθriː.piːs ˈswiːt/ us/ˌθriː.piːs ˈswiːt/ (US usually living room suite)
三件套家具（包括一个沙发和两把配套椅子）
a sofa (= a long, soft seat with a back and usually arms, on which more than one person can sit at the same time) with two matching chairs