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N-SING
（对事实、局面等的）承认
An acknowledgement is a statement or action which recognizes that something exists or is true.
例句
The President's resignation appears to be an acknowledgment that he has lost all hope of keeping the country together...
总统的辞职似乎表明他对维护国家稳定已不抱任何希望。
He appreciated her acknowledgement of his maturity.
她承认他的成熟，他对此心怀感激。
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N-PLURAL
（作者的）致谢，鸣谢
The acknowledgements in a book are the section in which the author thanks all the people who have helped him or her.
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N-UNCOUNT
打招呼的表示（如微笑等）
A gesture of acknowledgement, such as a smile, shows someone that you have seen and recognized them.
例句
Farling smiled in acknowledgement and gave a bow...
法林微笑示意，又躬身行了个礼。
Mitzi nodded a perfunctory acknowledgement as her glass was filled.
杯子被倒满时米芝敷衍性地点头示意。
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N-VAR
公开致谢
An acknowledgement is a published statement in which you express your gratitude for or appreciation of something.
例句
The benefit to the donor was an acknowledgment of the donation in a printed bulletin...
捐赠者被印入捐赠公示榜以示感谢。
Grateful acknowledgment is made for permission to reprint.
为获准重印致以深切感谢。
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N-COUNT
（表示已收到信函等的）确认通知，收件复函
An acknowledgement is a letter or message that you receive from someone, telling you that something you have sent to them has arrived.
例句
I have received neither an acknowledgment nor a reply.
我未收到任何复函或答复。