Public-health campaigns, better education and more hands-on parenting have no doubt had some effect.

各式公共健康运动的展开、教育水平的提高以及父母更多亲力亲为地指导，无疑都会对他们形成一定影响。

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Some experts say no really good studies have been done to measure the effect of school calendars on performance.

一些专家说，没有真正好的研究工作已经完成测量的影响，学校行事历上的表现。

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Some drugs have little or no damaging effect on the marrow, while others have definite effects that can be reversed quickly once the therapy is stopped.

一些药物对骨髓没有影响或影响很小。另一些有一定影响，治疗停止影响会很快消失。

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In addition, many online services have sprung up that unlock phones for a small fee and some have said the change will have no effect on them.

BBC: US phone unlocking deadline expires

Not surprisingly, some charities fear it could cut donations, although it would obviously have no effect on the behavior of billionaires like Warren Buffett and Bill Gates, who have pledged to give away half or more of their wealth.

FORBES: Hawaii Adopts Obama Style Tax Hike On Rich

And it is not much less for some old-economy shares, because equity investors have no idea of the effect of the Internet on companies' prospects.

ECONOMIST: Corporate bonds