Previous experiments have shown that universal basic income can have a positive effect.

先前的实验表明，全民基本收入起到了积极的效果。

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The purpose of this paper is to discuss the positive effect of contract production mode which is the main agricultural industrialization mode in increasing food safety and farmers' income.

本文的目的就是探讨合同生产模式这一主要的农业产业化经营组织形式在提高农产品质量安全和增加农民收入等方面所起的积极作用。

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Weather the income tax influence on saving behavior is positive or negative depends on the net effect of income effect and substitute effect resulted by the tax saving.

所得税对储蓄行为的影响是积极的还是消极的，取决于税收储蓄的收入效应与替代效应的相对大小。

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