名词
中文翻译：Unknown
同义词：
['tip', 'tipping', 'gratuity']
例句：
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1. In Italy, it'scustomary to leave a small amount ofmoney as a tip when dining out.
在意大利，外出就餐时留下一点钱作为小费是习惯。
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2. The waiter gave me a smileand asked for my tip.
服务员给我一个微笑，并问我要小费。
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3. She decided to tip the waiteran extra dollar for his excellent service.
她决定额外给服务员一美元作为感谢他的优质服务。