英语笑话:It depends 看情况

Traveler: Can I catch the three o'clock train to Toronto?Ticket agent: That depends on how fast you can run. It left fifteen minutes ago.

旅行者：我还能赶上3点钟那班到多伦多的火车吗？售票员：那得看你跑得有多快。火车15分钟前开出。