形容词
中文翻译：一流的
同义词：
['top-notch', 'excellent', 'superior例句：1. The first-class service at the hotel was exceptional.（酒店的一流服务非常出色。）2. This product is first-class', "and it's priced reasonably.（这款产品是一流的，而且价格合理。）"]
例句：
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1. The first-class service at the hotel was exceptional.
酒店的一流服务非常出色。
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2. This product is first-class, and it's priced reasonably.
这款产品是一流的，而且价格合理。
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3.He won first-class honors in his field of study.
他在研究领域获得了最高荣誉。