英语语法分析

This was a fiendish act of wickedness.

这是一种残忍邪恶的行为。

《柯林斯英汉双解大词典》

So he concocted a fiendish scheme to trick her into paying.

于是他编造了一个残忍的计划，以诱骗她支付。

A rather neat option allows you to design your own fiendish puzzle.

只要干净利落地做一个选择，你就能自己设计出难以解开的谜题。