be sure

基本解释

We have to be sure of that first.
我们得确信这是第一位的。
Be sure to kill your cigarette butt before throwing it away.
将烟蒂扔掉前一定要把它熄灭。
Be sure your lever is in neutral before you start up your car.
在发动汽车前，你一定要确保汽车的变速杆处于空挡位。

Scientists say more information is needed before they can be sure that painting roofs white would help battle rising temperatures.
There are so few words that you can be sure that they were chosen with care. You'll be looking at Genesis 22 closely in your section discussions.
几乎没有一个词你可以确定含义，它们的选定都是经过仔细,推敲的，你们将在讨论阶段更详细地看《创世纪》第22章。
耶鲁公开课 - 旧约导论课程节选
because it will give you an opportunity to say "I want to be sure that this is done, has been done"
因为用这个句型，你就能表达“我想确认这事会做到的，或者已经做到了。”
Make sure 课堂 - SpeakingMax英语口语达人

At the same time, be sure to preserve the core skills that separate your company from the competition.
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