Don't lose hope, don't give up your life.
不要失去希望，不要放弃你的生活。
But I don't think you should lose hope.
但我认为你不该失去希望。
He didn't lose hope though he had failed twice.
尽管失败了两次，他仍未失去希望。
If we lose hope, our life will be meaningless.
如果我们失去了希望，我们的生命就会暗淡无光。
The school motto is 'Never lose hope.'
这所学校的格言是'永不气馁'。