the tip of anything
任何东西的尖端
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The correlation between larger tips and better service was very weak: only a tiny part of the variability in the size of the tip had anything to do with the quality of service.
较多小费与良好服务之间的联系是非常微弱的：小费的多寡中只有很小一部分同服务质量有关。
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