Definition
Used to describe an event, especially a crime, that occurs during the day, implying that it should have been easily seen or prevented.
光天化日下（发生）
The burglars broke into the house in broad daylight.
竊賊在光天化日之下闖入了那棟房子。
The robbery occurred in broad daylight, which is incredibly audacious.
搶劫發生在光天化日之下，這真是膽大包天。
He dared to commit the theft on the street in broad daylight.
他竟敢在光天化日之下在街上行竊。