And pro - garden groups churning out studies that show huge paybacks on investing in a home garden.

提倡种菜的组织辛勤得出的研究结果显示,投资自家菜园能有丰厚的回报.

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Charged with producing bottom - line results, these groups demanded quick results and fast paybacks.

由于承受产生帐本盈亏底线的压力, 这些小组要求很快得到结果和快速回报.

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