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1)Turn a blind eye (to refuse to acknowledge something that you know is true)
a.Admiral Horatio Nelson was fighting a naval battle (Battle of Copenhagen)
b.His fellow Admiral sent a message telling them to disengage
c.Nelson believed that they could win if they carry on fighting.
d.Nelson put a telescope to his blind eye and pretended that he didn’t see the signal.

Hi everyone, and welcome back to our new segment 【It means what】.
欢迎回来我们新的一个小板块叫做【词源考古研究所】, 在这个板块里我和安澜会跟大家分享一些英文常见的词和习语它们背后的历史故事.
Hi, 安澜.
Hi Lulu, hi everyone.
What is our idiom or word of the day？
Our idiom today is Turn a Blind Eye.
Blind means you cannot see, so To Turn a Blind Eye is actually a very common idiom, it means?
Well,  it means to refuse to acknowledge that something is true.
 Or just basically pretend not to see it. 中文里我们也有一个一模一样的词, 就是睁一只眼闭一只眼, 安澜也知道吧？ And I bet it has a specific historical background.