a household word的用法和樣例：
例句
- Hoover has become a household word for a vacuum cleaner through the world.
在世界各地，家家戶戶都知道胡佛已成了吸塵器的代名詞。 - Cindy married one of her publishers and became a household word.
辛迪嫁給了她的一位出版商，成了家喻戶曉的人。 - The product was so successful that its name became a household word.
這一產品非常成功，其名稱已經家喻戶曉。
