flashmob

US /ˈflæʃ.mɑːb/
UK /ˈflæʃ.mɑːb/
"flashmob" picture
1.

快闪族

a public gathering of people who perform an unusual or seemingly random act and then disperse, typically organized by means of the internet or social media

:
A huge flashmob suddenly appeared in the town square, dancing in sync.
一个巨大的快闪族突然出现在城镇广场,同步跳舞。
The surprise proposal was actually a well-organized flashmob.
这个惊喜求婚实际上是一个组织良好的快闪族