There is continuing debate as to how effective sunscreen is in reducing melanomas—the evidence is weaker than it is for preventing other types of skin cancer.
关于防晒霜是否能有效减少黑色素瘤，争议仍然存在——相较于预防其他皮肤癌，防晒霜能减少黑色素瘤的证据还不充分。
The article raised doubts about how effective the new drug really was.
这篇文章对这种新药的实效有多大提出了疑问。
无人机的使用效果如何？
You would be surprised at how effective this can be.
你可能会惊讶于Twitter的高效。
Just how effective the policy will prove cannot yet be judged.
只是这项政策能多有效还无法判定。
Today it is not even certain how effective intervention might be.
现在，干预的手段会多有效也并不是很确定。
It remains to be seen how effective an example Europe will set.
欧洲将要设立的榜样到底有多少效率还有待观察。
How effective is your local child protective services department?
您当地的儿童保护服务部门是如何起作用的？
But there must be some doubt how effective these initiatives will be.
但对于这些措施有多大效果，人们肯定存在一些疑虑。
But my concern over the last few years is just how effective this is.
但我过去几年关注的是，这是多么有效。
How effective these new rules will be depends on how they are interpreted.
这些新规则是否有效将取决于他们如何解释规则。
There's no consensus yet about how effective brain-training games really are.
脑力训练类游戏的效果到底有多好，目前还没有定论。
Pioneers like Sal Khan are already showing how effective online tools can be.
像开拓者萨尔可汗已经展示了在线工具的高效率。
The team is monitoring the bridge closely to see just how effective these systems are.
Rice博士一队正密切地监测这座大桥以便观察这些系统有多大功效。
It is unclear just how effective this prevention measure is without the addition of a repellent.
如果不喷洒蜱剂，该防护措施的实际效果，尚不明确。
The research also shows how effective "target hardening" (ie, self-protection against crime) can be.
研究也向我们展示“目标硬化”(即防范犯罪的自我保护)的高效性。
To see just how effective my tests are at exercising the code, I can check code coverage with Hansel.
为了看看上述测试在检验这块代码时效果如何，我可以用Hansel检查代码覆盖情况。
How effective are these various working groups that bequeath web service standards into the marketplace?
将Webservices标准引入市场的这些工作组的效率如何？
Stickk is a commitment contract website with a co-founder who has studied how effective the contracts can be.
Stickk是一个专门签订“承诺合约”的网站，有一个共同创办人，他会研究你合约的有效值。
I was honestly surprised by just how effective the Burrows-Wheeler algorithm was when I started empirical testing.
当我开始凭经验测试时，我实在惊奇Burrows - Wheeler算法的有效性。
If you choose to leverage memcached as your caching solution, I am sure you will see just how effective it is.
如果您选择使用memcached作为缓存解决方案，那么我敢保证您可以看到它的效率如何。
It can be the single biggest factor in how effective your designs are, and how happy your clients are as a result.
它可以是你设计表现效果以及你的客户乐意程度的最大单独因素。
To make the link, Dutch scientists looked at how effective the bodies of nine healthy volunteers were at processing sugar.
荷兰科学家们对九位身体健康的实验者进行调查，看看他们的身体是如何有效的进行糖类转化这一过程的。 他们可以从中找到一些关联。
A new report from the Center for Evaluation and Education Policy at Indiana University examines research into how effective this is.
最近一个来自印第安那大学教育评估和教育政策中心的报告调查了这些做法的有效性。
A MONTH of tramping around Europe has given your correspondent a chance to see how effective the new e-passports are at border crossings.
本刊记者漫游欧洲一月，借机了解了一下新的电子护照在边境口岸的使用效果。
One study saw participants asked to read an article offering ways to improve your mood, and follow one of the tips to see how effective it was.
一项研究让参与者阅读一篇关于如何改善情绪，然后让他们遵从其中一条建议，看这种建议的效果如何。
One study saw participants asked to read an article offering ways to improve your mood, and follow one of the tips to see how effective it was.
一项研究让参与者阅读一篇关于如何改善情绪，然后让他们遵从其中一条建议，看这种建议的效果如何。
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