I'm afraid I can't be certain about that until next week.
恐怕要等到下星期我才能确定。
Now, we know certain things about this empathy, some which might be surprising.
我们对移情有一定的了解，有些了解会让你吃一惊。
Kids will be curious about it when they reach a certain age.
当孩子到达一定年龄时，他们对这个会很好奇。
How certain do I need to be about my conclusions?
我需要对我的结论有多肯定？
One thing is certain about the New Year: It will be a great time to look for a new job.
新的一年，有一件事是肯定的：明年将是找新工作的绝佳时机。
When I buy formal dress , I can never be quite certain about my choice.
当我购买正式衣著时，我永不肯定我的选择。
When I buy formal dress , I can never be quite certain about my choice.
当我购买正式衣著时，我永不肯定我的选择。
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