If you are aware of something, you know about it.
Smokers are well aware of the dangers to their own health.
吸烟者们都很清楚吸烟对其健康的危害。
He should have been aware of what his junior officers were doing.
他本该意识到自己的部下在做什么。
If you are aware of something, you realize that it is present or is happening because you hear it, see it, smell it, or feel it.
She was acutely aware of the noise of the city.
她敏锐地察觉到城市的噪音。