You must go into this with both eyes open.

你必须把眼睛睁亮来对待这件事。

youdao

The reflex optical sight means you can fire with both eyes open.

它配有反射瞄准镜，你可以睁开双眼射击。

youdao

When I put a camera to my eye, even though I typically shoot with both eyes open, I get tunnel vision, bad.

当我把相机举在眼前时——即使我习惯睁开双眼取景拍摄——我的视线已经变得非常狭窄了，这样很糟。

youdao

In summary: while alternative lenders can provide the means for growth and cash flow salvation to a growing venture, entrepreneurs should examine these lending products and partnerships with both eyes open, to stay both sharp and aware.

FORBES: 'Money, Money' -- How Alternative Lending Could Increase Your Company's Revenue in 2013

They have just finished several years of research on primary materials - what we'll call stuff - and put it in a book, Sustainable Materials With Both Eyes Open, free to download and fascinating for umpteen reasons.

BBC: Go Figure: Why does every person need 200kg of steel a year?

The technique was based on a gestural vocabulary that included drawing back, with both hands open and raised up, eyes wide open, and mouth agape, to indicate surprise, and that sort of thing.

FORBES: Why You Need to Change Your Public Speaking Style