1、A man's three-piece suit includes a jacket, trousers, and a waistcoat.
男人的三件套服裝包括上衣、長褲和背心。

2、A man’s three-piece suit includes a jacket,trousers,and a waistcoat
男人的三件套服裝包括上衣、長褲和背心。

3、I usually wear a three-piece suit to work.
我總是穿著三件套的西服去上班。