What Descartes has done is find at least one thing that he can be certain of.
笛卡尔所做的就是找到了至少一件他能确定的事。
How long do we have to run an experiment before we can be certain of the results?
我们进行多久测试后才能确定得到的结果？
No matter what stance you take be certain of one thing; your reputation will precede you.
不管你的立场如何你都要确信一件事情；你的声誉会代表你。
Remember that even if you don't know everything, you can still be certain of what you expect.
记着，即便你不知道一切，可是你还是能对于期望的东西肯定。
I wanted to be certain of my own wisdom by copying Solomon, who had knowledge of hyssop and of tree.
我希望仿效通晓牛膝草和树木知识的所罗门王，确信自己的智慧。
There is only one corner of the universe you can be certain of improving and that's your own self.
在宇宙中只有一个角落能让你提升，而这个角落就是你自己。
There's only one corner of the universe you can be certain of improving, and that's your own self.
这个宇宙中只有一个角落你肯定可以改进，那就是你自己。【每天反省，超越千万人】。
To be certain of a place, we started attending the local Anglican church when Robert was about two.
为了确定能被录取，我们在Robert两岁时开始参加当地的国教教会。
And remember you don't need a certain number of friends just a number of friends you can be certain of.
请记住，你不需要一定数量的朋友，只要有一些你可以确定的朋友就够了。
And remember, you don't need a certain number of friends, just a number of friends you can be certain of.
请记住，你不需要一定数量的朋友，只要有一些你可以确定的朋友就够了。
There are times when new considerations pop in and I want to be certain of the decision before committing myself.
这时会突然出现之前没有想到的新的注意事项，我们于是很想在全力做这件是之前确定自己的决定。
He cannot be certain of winning a majority in his assembly, though he can probably deploy his popular appeal to scrape one together.
他不能确定，一定能在议会里获得多数。
If your answer is yes, then you are wrong again. All we can be certain of is that the relative speed between the two trains changed.
如果你回答说是的，那么你就又错了。我们所能够完全肯定的一点只是这两列火车之间的相对速度变了。
BACK in the 1980s, marketers could be certain of reaching 90% of American households with an advertisement on prime-time network television.
回顾上世纪八十年代，市场营销人员只需要在电视网黄金时间投放广告便可以确保对美国家庭的送达率达到90%。
He cautions that only 60 babies have been born using this technique so far, and with such low Numbers it is not possible to be certain of success rates.
他指出目前为止只有60个婴儿是利用这项技术出生的，如此少的数量不可能确定成功率的高低。
They need to be certain of several hours of clear air as it will take two hours for an initial reconnaissance team to reach the area where the missing men are.
搜救人员需要确定干净的空气能保持数小时，因为打头阵的侦察队确定被困矿工的位置就需要两个小时。
Because other forms of respiratory infection including PCP are common among HIV-infected people, doctors must be certain of diagnosis before administering antibiotics.
由于包括卡式肺囊虫肺炎在内的其他呼吸道感染，在HIV病毒感染者身上很常见，医生在使用某些抗生素前必须对诊断结果确认无疑。
With a little bit of family magic and a lot of attention, Luke was certain these would be the most beautiful tomatoes he had ever seen once August arrived.
有了一点家庭的魔力和大量的关注，卢克确信，八月一到，这些将是他见过的最漂亮的西红柿。
These results provide support for researchers' prediction that naltrexone will turn out to be toxic to certain types of bacteria.
这些结果支持了研究人员的预测，即纳曲酮对某些类型的细菌是有害的。
The developing brain, the report says, is particularly vulnerable to the toxic effects of certain chemicals these products may contain, and the damage they cause can be permanent.
报告说，正在发育的大脑特别容易受到这些产品里可能含有的某些化学物质的毒性影响，而这些化学物质造成的损害可能是永久性的。
While mineral deficiencies can limit the growth of plants, an overabundance of certain minerals can be toxic and can also limit growth.
虽然缺乏矿物质会限制植物的生长，但某些过量的矿物质会使植物中毒，同样会限制植物的生长。
Opacity of the eye lens can be induced by deficiency of certain vitamins.
眼球晶状体的混浊可由缺乏某些维生素引起。
Such claims should be regarded with a certain amount of scepticism.
对这样的说法，大可不必全信。
They can just be symptoms of a sleep disorder that can result from an unpleasant experience, stress, or certain drugs.
它们可能只是睡眠障碍的症状，可能是由不愉快的经历、压力或某些药物引起的。
Scientists say both studies demonstrate that certain parts of the ecosystem respond rapidly to reductions in atmospheric pollution, but that these findings should not be used as a license to pollute.
科学家称这两项研究都表明，生态系统的某些部分对于大气污染的减少反应迅速，但这些发现不应该成为允许污染的理由。
Scientists say both studies demonstrate that certain parts of the ecosystem respond rapidly to reductions in atmospheric pollution, but that these findings should not be used as a license to pollute.
科学家称这两项研究都表明，生态系统的某些部分对于大气污染的减少反应迅速，但这些发现不应该成为允许污染的理由。
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