Speak of the devil.

• 说到曹操

Speak of the devil.的用法和样例：

例句

1. Well, speak of the devil,here's Alice now!
   嗬，说到曹操，曹操就到，瞧，艾丽斯这不来啦！
2. Speak of angels, and you will hear their wings.
   说到曹操，曹操就到。