For certain personal reasons I shall not be able to attend.
由于某种个人原因，我将不能出席。
Some soils are actually too alkaline for certain plant life.
有些土壤的碱性，实际上对某些植物的生长是过高的。
The prime minister is heading for certain defeat if he forces a vote.
如果首相强令大家投票表决，那他一定会遭遇失败。
The courts were empowered to impose the death sentence for certain crimes.
法院有权因某些罪行判处罪犯死刑。
"Yes, yes; for certain that was Kay," said Gerda.
“是的，是的；那一定是加伊。”格尔达说。
Other times, bad ideas can cause problems for certain groups of people.
有时候，坏主意会给某些群体带来麻烦。
For certain purposes, you can talk about slices, but the fundamental thing is the salami.
因为某种目的，你可以谈论切片，但根本的在于意大利腊肠本身。
If you want to target certain species of animals, then some parks are better than others for certain species.
如果你想看某些种类的动物，那么有这些动物的公园比其他公园要好。
It is also important to note that the study found only a correlation, as researchers did not prove for certain that optimism leads to a longer life.
还值得注意的是，该研究只是发现了一种关联，因为研究人员并不能明确证明乐观与长寿有必然联系。
Medical research often makes use of the forest's plant and animal life, and the destruction of such species could prevent researchers from finding cures for certain diseases.
医学研究通常利用森林中的动植物，毁坏这些物种可能会令研究人员找不到某些疾病的治疗药物。
I can't say for certain when we'll arrive.
我说不准我们什么时候能到。
She couldn't know what time he'd go, or even for certain that he'd go at all.
她不知道他何时要走，甚至于还不能确定他究竟要不要走。
If your child regresses to babyish behaviour, all you know for certain is that the child is under stress.
如果你的孩子退步到幼稚的行为，你可以肯定的是孩子正处在压力之下。
Skimming involves reading a passage quickly and only looking for certain words or sentences.
略读是指快速阅读一篇文章，只寻找特定的单词或句子。
One thing is for certain—Larry went above and beyond the call of duty by getting so close to the burning vehicle!
有一件事是肯定的——拉里如此靠近燃烧的汽车，这已经超出了他的职责要求。
"That's Kay for certain," said Gerda.
"那一定是加伊！”格尔达说。
Early kites were built for certain uses.
早期的风筝有特定的用途。
Someone will make a mistake for certain and take the wrong ones.
一个人总会会犯错误，走错路的。
Many too are seeing the advantages of scrapping a degree requirement for certain roles.
也有许多人看到了取消某些职位的学历要求是有所裨益的。
Each of us is likely to develop a personal preference for certain types of entertainment.
我们每个人都有可能对特定的娱乐类型产生个人的偏爱。
One of them is a word counter, which counts for certain word occurrence in several files.
其中之一是单词计数器，它统计某一单词在几个文件中出现的次数。
I don't know for certain why Carl Dadisman, the owner, wouldn't stop Daddy from sitting down.
我不知道出于什么原因，卡尔·达迪斯曼——这家店的店主——并不阻止爸爸坐下。
According to Peter Sandiford of the Liverpool School of Tropical Medicine, no one knows for certain.
据利物浦热带医学院的彼得·桑迪福德说，没有人确切地知道。
McKee and his team now knew for certain that they had found the wreck, but were as yet unaware that it also housed a treasure trove of beautifully preserved artefacts.
麦基和他的团队现在已经确定他们找到了沉船，但他们还没有意识到这艘船里也有一个保存完好的艺术品宝库。
但是有一件事是肯定的。
有一件事是确定的。
There are many things she knew for certain.
她对很多事情都很有把握。
Ideal weather for certain optical illusions.
产生某些光幻象的完美的天气。
But he added, he did not know for certain.
但是他补充说，他也不确定。
I do not know, for certain, what they mean.
我不知道他们所说的确切含义。
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