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VERB
承认（事实、局面等）
If you acknowledge a fact or a situation, you accept or admit that it is true or that it exists.
例句
Naylor acknowledged, in a letter to the judge, that he was a drug addict...
内勒在给法官的信中承认自己吸毒。
Belatedly, the government has acknowledged the problem...
政府迟迟才承认了该问题。
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VERB
公认，认可（某人的成就、地位、品质等）
If someone's achievements, status, or qualities are acknowledged, they are known about and recognized by a lot of people, or by a particular group of people.
例句
He is also acknowledged as an excellent goalkeeper...
他也被公认为是一名出色的守门员。
Some of the clergy refused to acknowledge the new king's legitimacy.
一部分神职人员拒绝承认新国王的合法地位。
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VERB
告知（信函等）的收到;确认…收悉
If you acknowledge a message or letter, you write to the person who sent it in order to say that you have received it.
例句
The army sent me a postcard acknowledging my request.
军队寄给我一张明信片告知我的申请书已收到。
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VERB
（以点头、微笑等）向…打招呼，理会
If you acknowledge someone, for example by moving your head or smiling, you show that you have seen and recognized them.
例句
He saw her but refused to even acknowledge her.
他看见了她，却连招呼也不打。
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VERB
（对掌声、赞扬、好意等作出姿态表示）感谢
If you acknowledge someone's applause, compliments, or kindness you make a gesture in order to thank them or show your appreciation.
例句
Doran stuck his head out of the window to acknowledge the cheering...
多兰将头探出窗户向欢呼的人们致谢。
She never even acknowledged the man who opened the door for her...
她对为自己开门的男士甚至连一点表示都没有。