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N-COUNT
有身份的人；紳士
A gentleman is a man who comes from a family of high social standing.
例句
...this wonderful portrait of English gentleman Joseph Greenway.
英國紳士約瑟夫·格林韋的精美畫像
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N-COUNT
有教養的人；彬彬有禮的人；君子
If you say that a man is a gentleman, you mean he is polite and educated, and can be trusted.
例句
He was always such a gentleman.
他總是那么彬彬有禮。
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N-COUNT; N-VOC
（對人禮貌的稱呼）先生
You can address men as gentlemen, or refer politely to them as gentlemen.
例句
This way, please, ladies and gentlemen...
女士們，先生們，這邊請。
It seems this gentleman was waiting for the doctor.
這位先生好像在等醫生。
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PHRASE
（口頭的）君子協定，紳士協定
A gentleman's agreement or a gentlemen's agreement is an informal agreement in which people trust one another to do what they have promised. The agreement is not written down and does not have any legal force.
例句
We had no contract; it was done by a gentleman's agreement...
我們沒有簽合同，就訂了個君子協定。
She made a gentleman's agreement with her buyer.
她和買主立了個君子協定。