A circus is a group that consists of clowns, acrobats, and animals that travels around to different places and performs shows.
双语例句
例：
My real ambition was to work in a circus.
我真正的理想是去马戏团工作。
2.?[SING 单数型名词] 马戏
The circus is the show performed by these people.
双语例句
例：
My dad took me to the circus.
我爸爸带我去看马戏。
3.?[SING 单数型名词] 闹剧
If you describe a group of people or an event as a circus, you disapprove of them because they attract a lot of attention but do not achieve anything useful.
双语例句
例：
It could well turn into some kind of a media circus.