come alive idiom          
 (地方)变得繁忙;热闹起来;活跃起来
If a place comes alive, it becomes filled with activity.
  The city centre really comes alive at the weekend. 到了周末,市中心就变得十分热闹。 
  显得逼真;变得有趣;鲜活起来
If you make something come alive, you make it seem real and interesting.
  She's a writer who really knows how to make her characters come alive. 她是一位真正懂得如何把人物塑造得栩栩如生的作家。