If you say that something is a magnet or is like a magnet, you mean that people are very attracted by it and want to go to it or look at it. 有吸引力的事物
noun [抽象名词] 磁体，磁铁；有吸引力的人（或地方、事物）
A magnet is a piece of iron or other material which attracts iron toward it. 磁体
