His rivals knew that they could expect no quarter from such a ruthless adversary.

他的竞争者明白，不能期望如此残忍的对手发善心。

《牛津词典》

I rose up suddenly, terror-struck at the solitude which so ruthless a judge haunted, — at the silence which so awful a voice filled.

我蓦地站了起来，被如此无情的法官所铸就的孤独，被充斥着如此可怕声音的寂静吓坏了。

youdao

He's a ruthless businessman, as I know to my cost.

我吃了苦头后才知道他是个无情的商人。

《牛津词典》

Glenn Close earned the Emmy for best actress in a drama for her role as a ruthless lawyer in the series Damages.

VOA: standard.2009.09.21

How do you prevent a company that charges fair prices and looks after its workers from being bankrupted by a ruthless rival, unless there is a way of insisting that the rival becomes less ruthless?

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Lendl, so famously ruthless as a player, coached a more aggressive style along with improved consistency.

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But Australia were ruthless as a Billy Slater hat-trick and Brett Morris, Jarryd Hayne and Cameron Smith touchdowns secured a comfortable win.

BBC: England 16-46 Australia