We don't know whether he's alive or dead.
我们不知道他是死是活。
Is your mother still alive ?
你的母亲还健在吗？
Doctors kept the baby alive for six weeks.
医生使婴儿活了六周。
I was glad to hear you're alive and well .
听说你健在我很高兴。
She had to steal food just to stay alive .
她得偷食物才不至于饿死。
He was buried alive in the earthquake.
地震把他活埋了。
Ed was alive with happiness.
埃德高兴得眉飞色舞。
to keep a tradition alive
继承传统
The pool was alive with goldfish.
池塘里满是游来游去的金鱼。
to be alive to the dangers/facts/possibilities
意识到危险；认识到事实；注意到可能
1.活着的;活动的,活泼的,精神抖擞的
2.热闹的 (with)
3.注意到的,敏感的 (to)
4.〈口〉生满(虱子等)的
5.【电】通有电流的,加有电压的
1.活着的;活动的,活泼的,精神抖擞的
2.热闹的 (with)
3.注意到的,敏感的 (to)
4.〈口〉生满(虱子等)的
5.【电】通有电流的,加有电压的
1.living and not dead; still existing and not gone or forgotten
2.full of energy and feeling happy and excited; full of activity; interesting and exciting
1.And he said, They were my brethren, even the sons of my mother: as the LORD liveth, if ye had saved them alive, I would not slay you.
基甸说，他们是我同母的弟兄，我指着永生的耶和华起誓，你们从前若存留他们的性命，我如今就不杀你们了。
2.Would you believe me if I told you that there's an animal that has been alive since the last Ice Age?
如果我告诉你，有只动物从上个冰河期活到现在，你会相信吗？
3.She left out none of the ghastly details: the wives forced to bury their husbands before being raped; the baby thrown alive into a latrine.
她没有遗漏任何恐怖的细节：妻子们在被强暴之前被迫埋葬她们的丈夫；婴儿被活生生地扔进茅厕。
4.I should be grateful to it because it has helped me keep alive up to now and clear away the shadow left on me by me old family.
我应该感谢它。因为靠了它我才能够活到现在；而且把旧家庭给我留下的阴影扫除了的也正是它。
5.It kind of feels like waking up in an MRI machine or being buried alive but with at least half the panic. At least.
这种体验就像在一个MRI机器中醒来，或者被活埋，但至少没有那么让人毛骨悚然。
6.If Michael really is alive, if he set up all this, if he faked his own death, then no one will be happier than me.
如果迈克真的还活着，如果是他策划了这一切，如果是他伪造了他的死亡，那么没有人会比我更开心。
7.Not long ago, if you didn't answer your home phone, that was that -- nobody knew if you were alive or dead, much less where you might be.
不久以前，如果你在家却不接电话，就没人知道你是不是还活着，更不用说找到你了。
8.His mother said that I had kept him alive and that she was grateful that I was her son's last friend.
大卫的妈妈说她很感激，因为是我给了大卫生的希望，我是他最后的朋友。
9.When she was alive, she looked out from her front window on hay meadows and a field.
她那时从前窗看出去只有草地和一块田地。
10.It looked so alive! It opened its mouth and made the special noise of that animal. It had small sharp white teeth.
它看上去活蹦乱跳！它张开嘴，发出一声这种动物特有的叫声。它长着又小又尖的白牙齿。