形容词
中文翻译：无价的
同义词：
['invaluable', 'priceless', 'irreplaceable']
例句：
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1. The paintingis priceless to me because it was created by my grandfather.
这幅画对我来说是无价之宝，因为它是由我的祖父创作的。
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2. The diamond in her necklace is priceless, as it was found in a remote part of Africa.
她项链上的钻石是无价之宝，因为它是在非洲一个偏远的地方发现的。
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3.The knowledge gained from this experience will be priceless for her future career.
从这次经历中获得的知识对她未来的职业生涯将是无价之宝。