交通运输的权力下放也能看到城市安排联合的公私交易，以便通过高速路线来连接彼此。
The devolution of power over transport could also see cities arranging joint public-private deals to connect each other through high-speed rail lines.
因为人们面对交易，下决定需要比较选择路线的成本和利益。
Because people face tradeoffs, making decisions requires comparing the costs and benefits of alternative course of action.
沿着这一路线，在阿根廷及其他地方的年轻女士举行着衣服交易会，为的是能够平衡时装采购的费用。
Along the same lines, young women in Argentina and elsewhere are holding clothes swapping parties in order to leverage the benefits of fashion purchases.
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