不能，can 的否定形式

I cannot attend the meeting tomorrow because I have a prior engagement.
我明天不能参加会议，因为我已经有别的安排了。
She cannot swim, so she is always afraid of going into deep water.
她不会游泳，所以总是害怕进入深水区。
The deadline is tomorrow, and I cannot finish the project on time.
截止日期是明天，我无法按时完成这个项目。
He cannot comprehend complex mathematical concepts easily.
他不容易理解复杂的数学概念。
The store has run out of stock, so I cannot buy that product right now.
店里已经缺货了，所以我现在无法购买那个产品。
Without a map, we cannot navigate through this unfamiliar terrain.
没有地图，我们无法穿越这片不熟悉的地形。
She was exhausted, and she could not keep her eyes open any longer.
她筋疲力尽，再也无法保持眼睛睁开。
The law does not allow us to discriminate against anyone, so we cannot do it.
法律不允许我们歧视任何人，所以我们不能这样做。
The old computer is too slow; it cannot handle modern software.
这台旧电脑太慢了，无法运行现代软件。
Despite his efforts, he cannot seem to overcome his fear of public speaking.
尽管他努力了，但似乎还是无法克服公开演讲的恐惧。