I don't think people are really aware of just how much it costs.

　　我認(rèn)為人們并不真正明白這要花多少錢。

　　We are very much aware of the lack of food supplies.

　　我們完全了解食物供應(yīng)的缺乏。

　　He became acutely conscious of having failed his parents.

　　他深深感到自己辜負(fù)了父母的期望。