形容词
中文翻译：一流的
同义词：
['first-rate', 'top-notch', 'premium']
例句：
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1.This hotel is first-class, with excellent service and facilities.
这家酒店一流，服务和设施都非常棒。
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2. She was awarded the first-class honor for her outstanding work.
她因出色的工作获得了最高荣誉。
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3.The first-class flight takes just over an hour to reach the destination.
头等舱的航班只需不到一个小时就能到达目的地。