She would break my biscuits in half to be certain I wouldn't choke.
她会把我的饼干掰成两半，以确保我不会噎着。
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。
To be certain that Rollie was talented, Mr. Ross ran a bright chimp through the same process and compared the results.
罗斯先生为了确认罗妮的确聪明，他对一只聪明的黑猩猩进行了相同的研究，并比较了研究结果。
The third, and most potent limitation is that it is not possible to be certain that the infant's response was due to the stimulus presented or to a change from no stimulus to a stimulus.
第三也是最有力的限制在于婴儿做出的是面对刺激的反应，还是从受到刺激到没受到刺激的变化，这是无法确认的。
There be certain chemicals in fertilizers used to crop-dust cotton that affect the unborn fetus.
作物粉尘中使用的化肥中有某些化学物质会影响胎儿。
In fact Mr Obama cannot be certain even now of securing any health reform at all.
其实，即使到现在奥巴马对医改法案能否通过也没有十拿九稳的把握。
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？
to be certain the sun will shine, but grab an umbrella on our way out — just in case.
确定阳光会很灿烂，出门还是带把雨伞——只是以防万一。
In the absence of good scientific trials, it is impossible to be certain which is which.
在缺乏良好的科学试验的情况下，是不可能确定哪些有效哪些无效的。
And Uncle Matt said: Well, Lawrence, I for one am out here tonight trying to be certain.
马特叔叔说：呃，劳伦斯，我可是打定了主意，今晚一定要万无一失。
Be certain you have feedback forms, and ask for feedback at the end of your presentations.
需要的是确认你要有回馈表单，并且在每次演说后要求对方写反馈。
Female runners also need to be certain they have adequate levels of iron in their diet, too.
女性跑步者还需要保证食谱中包含足够的铁。
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。
You want to be certain you pick a book you like, as you'll be spending a lot of time studying it.
您肯定希望挑选一本喜欢的书，因为将要花大量时间学习它。
ONE can't be certain, but it seems as if the latest European market panic may—MAY—have come to an end.
没有人敢确信，不过看起来这次欧洲市场恐慌“可能”要结束了。
"In THIS world nothing can be said to be certain, except death and taxes," mused Benjamin Franklin.
本杰明·富兰克林曾沉思，“在这个世界上，除了死亡和税收，没有什么是确定无疑的”。
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。
It used aliens in place of actual species to be certain that the participants could not draw on prior knowledge.
它用外星人来取代实际实际物种，是为了确信参与者不能利用先验知识。
Nothing in this world nothing can be said to be certain, except death, taxes, and enterprise software disruption.
当今世界，没有什么东西是确定的，只有死亡、税收，和企业软件的破坏性除外。
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。
Get outside opinions on your new advertising concepts to be certain they carry the personality and message you intend.
吸取外部给你的新广告观点提出的意见，以确定它们具备你要表达的特点和信息。
In other words, prove your worth on paper and be certain to provide copies to those involved in the interview process.
换句话说，用书面形式证明你的价值，并且一定要在面谈过程中能够提供这些文件的复印件。
Comments: Having never seen an iceberg in real life, NewsFeed can't be certain that we wouldn't have fallen for this prank.
点评：要不是没有在现实生活中看见过冰山，我们确信不会掉进这个恶作剧的陷阱。
Special search programmes continued throughout the world for another two years to be certain that transmission had stopped.
此后两年中继续在整个世界进行特别搜寻规划，用以确定天花不再传播。
Yet without an international deal that sets targets for all, no one nation can be certain that others will pull their weight.
然而，没有一个国际协议为各国设置目标，没有一个国家能确定其他国家会尽心尽力。
Yet without an international deal that sets targets for all, no one nation can be certain that others will pull their weight.
然而，没有一个国际协议为各国设置目标，没有一个国家能确定其他国家会尽心尽力。
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