A 1972 paper by Armen Alchian and Harold Demsetz, for example, describes how the firm evolved as an organisational form to prevent shirking in team production.

比如，阿曼•阿尔钦和哈罗德•登姆塞茨在1972年的一篇论文中描述了企业是如何作为一种防止团队生产中的偷懒现象的组织形式演化的。

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The only thing left now is to get title insurance—the piece of paper that ensures that the property is free of liens that could prevent it from legal sale—and to officially transfer the funds.

现在剩下最后一件事情，得到产权保险----这张纸能确保房产无留置权，防止合法买卖---和正式地转移资金。

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To prevent a paper cut from getting infected, it must be taken care of properly and immediately.

为了防止纸张划伤感染，必须立即采取适当措施。

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University of Arizona extension experts say covering plants and small trees with cloth or paper can help prevent frost damage.

VOA: special.2010.01.12

These services can prevent unnecessary exposure of paper documents that contain sensitive information.

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Mr Dewar is sage enough to know that as well, which is why he was happy privately to reassure Mr Salmond that there would be nothing in the white paper to prevent the Scottish parliament from, say, holding a referendum on independence if it wanted.

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And that, a blank piece of paper, is not going to prevent middle-class tax rates from going up.

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