形容词
中文翻译：了解的
同义词：
['informed', 'knowledgeable', 'informed about']
例句：
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1. She's in the know about all the latest trends in fashion.
她对时尚界的最新趋势了如指掌。
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2. The expert in the know shared his insights on the matter.
那位专家分享了他对此事的见解。
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3. He was in the know about the upcoming concert.
他提前知道了即将举行的音乐会。