be clear about

基本解释

What do you want? Be clear about this!
要绝对清楚，你想要的是什么？
My view is that as scientists, we can provide useful information, but we need to be clear about its limitations and strive to improve information for the future.
我的看法是，做为科学家能提供有用的信息，但也需要对其局限性有清醒的认识，并努力提升将来所能提供的信息。
Be clear about what you want, set aside time to visualize it everyday, ponder it through out your day, and the motivation you need to create the life you want will grow stronger and stronger.
清楚自己想要什么，每天都留出时间来将它具体化一些，每天都进行一些思考，并且不断地激励自己继续努力，这样你就会变得越来越强。

That is why we are here today. I want to be clear about this.
It's one thing to be clear-- a couple of things to be clear about.
但有一点是需要说明,有一些东西需要说明
耶鲁公开课 - 死亡课程节选
All right,so the thought was,look,this guy over here, David Smith's body with Napoleon's personality-- And let's be clear about this.
好的，这个假想是，这边这个家伙，拥有拿破仑人格的David，Smith肉体-,说得清晰一点吧。
耶鲁公开课 - 死亡课程节选

But let's be clear about one thing: The museum business is no ticket to easy street.
FORBES: Un-private Houses