She doesn't have the ruthlessness required to succeed in business.

要在生意场上干出一番名堂，她缺乏必要的冷酷心肠。

《牛津词典》

In The Prince, he championed cunning, ruthlessness, and boldness, rather than virtue, mercy and justice, as the skills of successful leaders.

在《君主论》中，他将狡诈、无情和勇敢，而不是美德、仁慈和正义，作为成功领导人的技能。

youdao

By ruling with utter ruthlessness, he kept the peace in Syria for three decades.

通过严厉无情的统治，他让这个国家保持了三十年的和平。

youdao

Virtue means for him a kind of manly self-assertion, audacity, ruthlessness, a reliance on one's own arms and calculated use of cruelty to achieve one's ends.

美德对他而言,是一种具男子气概的自作主张，胆大，冷酷，自助，且还会算计使用残忍手段,来达致目标。

耶鲁公开课 - 政治哲学导论课程节选

One quality that Murtaza does not lack is ruthlessness - with his own followers as well as his enemies.

CNN: BHUTTO'S HEIR TO VIOLENCE

Abou Zeid's ruthlessness -- and his growing influence -- were confirmed three years ago when he ordered the beheading of an elderly British tourist -- Edwin Dyer -- who'd been seized by his group early in 2009.

CNN: STORY HIGHLIGHTS

Take a little bit of communist-era central control, a little bit of hyper-capitalist ruthlessness, a big dollop of political muscle and... hey presto you have unbeatable competition.

BBC: Europe diary: The gas man