The sky's the limit. We use this expression to say that anything is possible. It's common when encouraging someone or talking about your own possibilities. 我们用这个短语来表示任何事情都是可能的。当你鼓励别人或者谈论你自己的可能性时，这是很常见的。 A: I just can’t believe the Nationals came back for the win. 我真不敢相信国家队最终能够获得胜利。 B: With the new players this year, I feel the sky’s the limit for this team. 今年有了新球员，这支队伍肯定前途无量。