to be sure of

基本解释

We have to be sure of that first.
我们得确信这是第一位的。
That is what one wants to be sure of. . . Wood is a pleasant thing to think about.
我们想弄清楚的也就是这个问题。木头是一件值得加以思索的愉快的事物。
But the idea is that no matter what else I do today, these are the things I want to be sure of doing. So, the MIT is the first thing I do each day, right after I have a glass of water to wake me up.
你每天最重要的任务就是在一天中你最想要或最急需完成的事情.就我个人的实际情况我将它的内涵延伸了,我的一天有三件最重要的事情-这三件事情是我一天内必须完成的.除了这三件事情外是否还有更多的事情有待我去完成呢.当然有了,但问题的关键是,无论我每天有多少事情要做,这三件事情是我必须完成的.因此最重要的事情是我每天在醒来喝完一杯水后要做的第一件事情(MIT).

So,if your employer tells you to cut to the chase, be sure to get to the main point of your story quickly.
To be sure, Machiavelli focuses on key aspects of political reality which are often ignored by thinkers like Plato and Aristotle.
事实上马奇亚维利所专注的,政治现实观点,是其它思想家所常遗漏,像柏拉图和亚里士多德。
耶鲁公开课 - 政治哲学导论课程节选
So, it's perfectly okay to be part of a collaboration, but you've got to make sure that you're pulling your weight.
所以,参与小组讨论是完全允许的,但你要保证你在其中有所作为
耶鲁公开课 - 基础物理课程节选

That means it is possible to be sure of the paternity of a tadpole.
ECONOMIST: Animal behaviour