根据利益原则，在维持警察队伍的费用方面，富人应该比穷人贡献更多。

According to the benefits principle, the wealthy should contribute more than the poor to the cost of maintaining the police force.

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因此，根据利益原则，富人应该比穷人贡献更多的维持警察部队工作的费用。

Therefore, according to the benefits principle, the wealthy should contribute more than the poor to the cost of maintaining the police force.

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法律的原则是，重要信息的披露，如风险与费用、销售凭证等，要充足，能够保护公众利益。

The legal principle is that disclosure of important information, such as risks and fees, in sales documents, is enough to protect the public.

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