If you don't hurry up and make a decision, you could miss the chance of a lifetime.要是不赶紧作决定的话，你就会失去这个千载难逢的机会。You let the chance of a lifetime slip by!你错过了一生难逢的机会!This job is the chance of a lifetime. You'd be a fool not to take it.这份工作千载难逢，你要是不干就是傻瓜。