The boy and the woman were already seated by spread table-cloth when the man came down to them, dressed in his business suit and vest and tie and hat as if he expected to meet someone along the way.
2
男人的套装由上衣、背心和裤子组成。
A man's suit consists of coat, vest and trousers.
3
男人的三件套服装包括上衣、长裤和背心。
A man's three-piece suit includes a jacket, trousers, and a waistcoat.