She clung to the hope that her son was still alive.
她始终抱着儿子还活着的希望。
Are your grandparents still alive?
你的祖父母还在世吗？
Although he is eighty, he is still very much alive.
他虽有八十岁了，但仍然充满了活力。
He is fully alive to the possible dangers.
他充分注意到会有危险。
The city was all alive when he arrived.
当他到达时，城里非常热闹。