No one policy will spur development; a comprehensive approach is needed.

任何单项政策是不能促进增长的，需要采取综合的方式。

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But if you always use the same well-worn routes to process information, your brain is less likely to get the stimulation it needs to spur development of new networks.

但如果你一直只是使用这些旧的神经网络来处理信息，那么你就缺少形成新神经网络的刺激。

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Recent work has shown, for example, that the signals that spur branching — which are typically silent once development is complete — are reawakened in some tumors.

例如，最近的研究已表明，本应在发育结束后沉默的刺状分支信号，会在一些癌症细胞中被唤醒。

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Donors tout Rwanda and Uganda as among the most successful examples of how foreign aid can spur development.

ECONOMIST: Uganda and Rwanda

He said the project is "basically a land deal" that will spur development in an area that's currently just pineland.

NPR: New Airport Project Divides Environmental Groups

In an effort to spur development of a domestic renewable fuel industry and wean the U.S. off of foreign oil, the U.S. government introduced tax credits for ethanol usage with the Energy Tax Act of 1978.

FORBES: Washington's Foolish Fuel Policy