adv.残酷地,凶猛地,刁钻地,非常
Finally, evaluating a Go position is fiendishly difficult.
最后, 评估一个围棋棋位极度困难.
This figure is reached by a fiendishly clever equation.
这个数字是通过一个精妙的方程式计算出来的。
America's trade laws are fiendishly complex.
美国的贸易法极为复杂。