Example: When the new employee started to speak with customers, his natural abilities as a sales man were as plain as day.

当新员工开始与顾客谈话时， 他作为推销员的本能充分显露出来。

youdao

The brilliance of innovative solutions as well as the unfortunate consequences of poor product quality is equally as plain as day.

FORBES: Influencing Your Buyer

Watson came running but only because he had heard Bell on the receiver, plain as day.

NEWYORKER: In the Air

The reference was twofold and plain as day.

WSJ: Soccer's Borussa Dortmund Faces Uphill Battle to Maintain Success