The pony swished its tail.

小马刷刷地甩着尾巴。

《牛津词典》

Why couldn't the pony talk?

为什么这匹小马不能讲话？

youdao

The pony has no idea.

小马没主意了。

youdao

It began a speedy mail service called the Pony Express.

VOA: special.2009.05.28

How do we take a complex program, again, divide and conquer, I feel like a 1-trick pony, I keep repeating the same thing over and over again.

同样的先分解再逐个击破，我就像只会一个把戏的小马，我不断重复相同的事情。

麻省理工公开课 - 计算机科学及编程导论课程节选

The Pony Express lasted only eighteen months.

VOA: special.2009.05.28

The RSPCA wants to trace the pony's owner to hear their version of events.

BBC: Man kicked helping drowning pony in Hampshire

The pony walked through the main entrance of the Pengam Green Tesco store, in Cardiff, on Thursday.

BBC: Tesco said they did not know where the pony had come from

The Pony Express began in 1860, six-day delivery started in 1863, and airmail became the mode in 1918.

WSJ: Goodbye Saturday mail? Postal Service plans cuts