这些节食方法中的95%都不奏效。
进攻未奏效，反而使敌人警觉起来。
The attack was unsuccessful and served only to alert the enemy.
我的计划奏效了，我让他们同意了。
我知道这事听起来很蠢，然而也许就会奏效。
除非计划奏效，否则该总统会面临一个难关。
The president could face a rough ride unless the plan works.
“和你交谈过的科学家们对此怎么看？”——“噢，首先，他们怀疑这是否会奏效。”
"What do scientists you've spoken with think about that?"—"Well, to begin with, they doubt it's going to work."
《经济学人》的推广策略奏效了。
在很多情况下，这种策略并不奏效。
但在很多情况下，这种策略并不奏效。
这个方法不一定奏效，但是值得一试。
There are no guarantees that this method will work, but it's worth a try.
不幸的是，那个方案似乎不太可能奏效。
这些努力都没有奏效，人们失望地回家。
None of these efforts worked, and the people went home disappointedly.
这种分权管理在人类组织中能够奏效吗？
Could such decentralized control work in a human organisation?
这种策略从未真正奏效。
为何整顿一直未能奏效？
他母亲的策略奏效了。
那什么奏效呢？
部长们一再提出的建议收效甚微，扩张计划也不太奏效。
Repeated ministerial advice is carrying little weight and the expansion programme is not working very well.
这一策略在实验室中可行，但是到了办公室就不那么奏效了。
This strategy works in the lab but would not go well in an office.
为了弄清这个计划是否奏效，科学家们追踪了每只黑豹及其后代。
To see whether the plan was working, scientists tracked every panther, as well as its offspring.
尽管这似乎符合一个崇高的目标，但这种“人民的政策”策略很少奏效，而且往往适得其反。
While this may seem justified by a noble goal, such "policy by people" tactics rarely work, and often backfire.
人类最初开始建造房屋时，决定它们是否如计划一样奏效的方法几乎是去试一下，看看有什么不妥的地方。
When humans first started building houses, determining whether they would work as planned was mostly a matter of trial and error.
阿西莫夫小说中的机器人暴露出这三条法则的复杂性与漏洞，即使这些法则奏效，机器人还是不得不对情况进行评估。
The robots in Asimov's fiction expose complications and loopholes in the three laws, and even when the laws work, robots still have to assess situations.
如果这个方法奏效的话，它能给博茨瓦纳以及其他地区的农民提供一种低成本、可持续的手段去保护牲畜，同时也能避免狮子被杀死。
If the method works, it could provide farmers in Botswana—and elsewhere—with a low-cost, sustainable tool to protect their livestock, and a way to keep lions safe from being killed.
这项发表在《美国预防医学杂志》上的新研究，并不是第一个将绿色植物与更好的健康状况联系起来的研究，但它确实让我们更接近于确定什么更奏效以及为什么会这样。
The new research, published in the American Journal of Preventive Medicine, isn't the first to associate greenery with better health, but it does get us closer to identifying what works and why.
这是一次好的尝试但未真正奏效。
许多规定饮食因单调乏味都不奏效。
制裁没有像他们原本打算的那样奏效。
警方的安排十分奏效。
以我的经验，角豆直接代替巧克力不会奏效。
In my experience a straight substitution of carob for chocolate doesn't work.
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