It was always appealing when a character is hoist on his own petard.

当一角色被吊在自己的脚下时，它总是很吸引。

How's that? How did I do? Do you know what a petard is?

样？我做得如何？你知道什是火枪吗？

And the fact that this was the committee that was going to quite possibly hoist Terry Truman on his own petard, which never happened.

事实上， 这委员会可能会让特里·杜鲁门自食其果，尽管这从未发生。

As Shakespeare puts it, they were hoisted or blown into the air by their own petard.

正如莎士比亚所言，他们被自己的诡计所害，自食其果。

How I picture a petard is some kind of medieval weapon that's sort of like a spear or a halberd or a pike, and that somehow you're hoisted on it in some kind of jousting accident.

我想象中的火枪是一中世纪的武器，有点像长矛或戟或pike，然后在某比武事故中，你被抬到上面了。