例句：
He was buried alive in the earthquake.
地震把他活埋了。
"She's alive!" he shouted triumphantly.
“她活着！”他狂喜地大喊。
She does not know if he is alive or dead.
她不知道他是活还是死。
We don't know whether he's alive or dead.
我们不知道他是死是活。
Doctors kept the baby alive for six weeks.
医生使婴儿活了六周。