How long can a human being go without sleep?
人不睡觉能活多久?
Events could have developed in a dramatically different way.
事情本来可以发展成另一种样子。
You can't stop people from saying what they think.
人们怎么想就会怎么说,你阻止不了。
You could see from his face that he was lying.
从他的表情上你可以看出他在说假话。