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N-SING
（物体表面形成的）薄层
A patina is a thin layer of something that has formed on the surface of something.
例句
The trophy is very impressive and rather special because it has a beautiful green patina...
这个奖杯给人印象非常深刻，相当特别，因为它表面有一层漂亮的绿锈。
He allowed a fine patina of old coffee to develop around the inside of the mug.
他任由大杯内壁积聚上一层薄薄的咖啡垢。
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N-SING
（旧东西年深日久产生的）包浆，光泽
The patina on an old object is an attractive soft shine that has developed on its surface, usually because it has been used a lot.
例句
...a mahogany door that is golden brown with the patina of age.
红木门因为年深日久形成的金棕色包浆
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N-SING
（有点儿…的）样子
If you say that someone has a patina of a quality or characteristic, you mean that they have a small but impressive amount of this quality or characteristic.
例句
...a superficial patina of knowledge...
表面上有点儿知识的样子
Except for a patina of charisma, he was like a thousand other bright young men in Toronto.
除了有点儿魅力外，他和多伦多其他众多机灵的年轻小伙子没有两样。