Turn a blind eye的中文意思是：睜一隻眼閉一隻眼，視而不見，熟視無睹。比如：The parents turned a blind eye to their child's misbehavior.這對父母對孩子的不當行為睜一隻眼閉一隻眼。
這個用語據說和一位真的歷史人物有關：英國海軍上將霍雷肖-納爾遜（Horatio Nelson）。在1801年的海戰上，納爾遜不理會上級的撤退命令，結果卻為英國打贏了勝仗。用語中用blind eye，是因為納爾遜將軍就是位獨眼將軍。
看看老外聊天時怎麼用turn a blind eye：
Amy:Mike，you're at work so early today.
邁克，你今天.上班來得好早。
Mike：No，it's 8：30--that's the usual start time.
沒有，八點半了，那是平常的上班時間。
Amy：But you worked until midnight last night.
可是你昨天晚上加班到午夜。
Mike：Yes，but Idon't think the boss turns a blind eye to people being late for work.
對，但我覺得老闆不會對遲到的人視而不見。
turn a blind eye例句精選：
I can't turn a blind eye when someone is being robbed.
當有人遭到搶劫時，我不能視而不見。
Don't turn a blind eye to matters that concern the people's welfare.
不要對民眾的利益漠然置之。
We should not turn a blind eye to the disadvantages of artificial intelligence.
我們不應該對人工智慧的壞處視而不見。
You also have a strong sense of justice and won't turn a blind eye to someone in trouble.
你有很強的正義感，絕不會對別人的麻煩視而不見。