What is not certain is whether we should follow, or be suspicious of, what our bodies are telling us.
不确定的是，我们是否应该遵循或怀疑我们的身体告诉我们的东西。
The same is not certain when it comes to students from more disadvantaged backgrounds.
对于家庭背景更贫困的学生来说，情况就不一定了。
The seed suppliers tell me things will be better next year, but I am not certain I trust them.
种子供应商告诉我明年情况会更好，但我不确定是否能相信他们。
I'm not certain it's meaningful unless you are in the habit of giving your furniture personal names.
我不确定它是否有意义，除非你有给家具起人名的习惯。
I'm not certain why this recipe for steak in a white wine, shallot, and bone-marrow sauce is where the book naturally opens to.
这道菜谱要把牛排放到白葡萄酒、大葱和骨髓酱里，我不确定为什么这本书会自己就翻到这一页来。
The effort in St Louis to rename Delmar Boulevard is not certain to succeed.
在圣路易斯重新命名德尔玛大道的努力未必会成功。
If you're not certain of your users' work habits, choose this category of user activity.
如果您不确定用户的工作习惯，那么可以选择这种用户活动。
It was not certain as The Economist went to press that Kraft would go ahead with its bid.
至经济学人发刊时还没有确定卡夫是否准备继续出价。
The development path seemed confusing, and the future of this solution was not certain to us.
Mambo的开发路径似乎有点儿混乱，而且对于这个解决方案的未来我们也没有把握。
And it is not certain that connecting the world's digital devices will be a viable market soon.
并且现在还不确定连接世界数码设备能否很快的形成市场。
It is also helpful to consider whether or not certain concerns are within or beyond your influence.
考虑一下某些顾虑是否在你影响范围之内是有帮助的。
I'm not certain it's meaningful, unless you are in the habit of giving your furniture personal names.
我不确定它有意义，除非你们热衷于,给你们的家具起名字。
Given the scale of the damage, it is not certain the cooling systems will work even if power is restored.
受损程度如此严重，就算在电力恢复的情况下，冷却系统能否正常工作仍旧是个未知数。
They say command will soon shift, but it's not certain if that will put NATO, France or Britain in charge.
有方面表示命令指挥权将会很快发生转移，但是也并不能断定会由北约，法国或者英国来发号施令。
Whether the case will indeed turn into a full-blown conflict between Brussels and Washington is not certain.
布鲁塞尔方和华盛顿方是否确实会在该案进入完全的争斗并不确定。
There is no reason to expect they would not compose nicely, but until testing is actually done, it is not certain.
没有理由预测它们不能够很好地组合，但是在实际执行测试之前，仍然是不确定的。
This looks doubly dangerous: a rate cut is not certain; it would also, quite possibly, be the wrong thing to do.
这看起来双倍危险：降息并非板上钉钉；而且加息行为本身可能是错误的。
Civil wars are so costly that well-timed military actions are quite likely (though not certain) to be cost-effective.
内战的代价如此高昂，因此，适时的军事行动很可能是成本有效的(尽管这不是必然的)。
Yes, dear, you would have. I would, if I'd been the same person then as I am now. Or perhaps I would - I'm not certain.
没错，亲爱的，你会这么做，我也会，如果我现在还是原来的我的话。或者也许我会这么做，但我不敢肯定。
It is not certain then that, when the time comes, the "Maple Crown" of Canada will pass to Prince Charles from his mother.
很难一定说，到期后加拿大的“枫叶皇冠”会从其母亲的头上传到查尔斯王子的头上。
Mr. Roberts, a reliable Switzerland, was not certain whether he would even bother attending shows in New York this season.
迈克尔·罗伯茨作为一位可靠的“中立国”，还不确定要不要出席纽约时装周。
While her team is confident that coal burning is causing the high rates of cancer, they are not certain it is due to silica.
她的团队相信，煤的燃烧导致了肺癌的高发病率，但是他们不能确定这是二氧化硅引起的。
In other words, it's not certain which came first: the health benefits of red wine, or that wine drinkers are healthy people.
换句话讲，很难判断喝葡萄酒的人更加健康是因为葡萄酒对人身体的好处，还是因为喝葡萄酒的人本身更加健康。
Complicating this issue is that scientists are not certain how much mercury-tainted fish is needed to trigger health problems.
使这个问题复杂化的是，科学家们无法确定吃多少汞污染的鱼，才会触发健康问题。
It's even possible that the volcano is still spreading, though this is not certain and more research would be needed to confirm it.
尽管还存在争议，并且需要更多的后续研究进行确认，然而这座火山可能正处于扩离过程中。
How do you determine policy when you don't have the hard scientific facts and when a public health threat is probable but not certain?
如果不掌握确凿的科学事实，而公共卫生威胁很可能发生但并不确定，则如何来决定政策？
How do you determine policy when you don't have the hard scientific facts and when a public health threat is probable but not certain?
如果不掌握确凿的科学事实，而公共卫生威胁很可能发生但并不确定，则如何来决定政策？
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