Some ideas can make a difference build more barrier free facilities and employ more workers to protect them but hard to be put into practice, because both of them require money.

有些想法可以产生影响，比如建造更多的无障碍设施，雇佣更多的工人来维护它们，但这些想法很难付诸实施，因为这些都需要资金。

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However, some specific situations may require more.

然而，一些特殊的情形需要的更多。

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Some complex services require a more interactive exchange with a client.

一些复杂的服务需要和客户端进行更多的交互。

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Some take more work. Others take almost no work but may require waiting up to a year.

VOA: special.2009.06.23

But some ideas require more money than can be scraped together by double mortgaging Aunt Jen's house.

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And some situations require more formal behaviors that might be interpreted very differently in any other setting.

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She says some jobs require more analytical know-how, though new hires for those teams can come from business, economics, math or other programs.

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