我希望确认每个人都头脑清楚并且可以回答提出的任何问题。

I want to be sure that everyone is playing with a full deck and that everyone can field any question asked.

在这样的环境中工作会使我们头脑清楚，能够思考所做的工作。

Working in these environments will keep our minds clear and thinking about the task at hand.

头脑清楚人会承担他并没有做过的事情的罪责，这似乎很难想象。

It seems hard to imagine that anyone of sound mind would take the blame for something he did not do.