Every dog has his day.
Bob won the lottery. (鲍勃中了头彩。)
Every dog has his day. (瞎猫碰上了死耗子。)
Everyone has good days.
Everyone gets lucky sometimes. (谁都会有走运的时候。)
A flying crow always gets something. *不太常用的说法。

说曹操，曹操到。
Speak of the devil. *“说到恶魔，恶魔就来”。源自谚语Speak of the devil and he will appear。
Speak of the devil.常用于口语中。
Here comes John! (约翰来了。)
Speak of the devil. (真是说到曹操，曹操到。)

情人眼里出西施。
Love