It is a deliberate, nasty and vicious attack on a young man's character.

这是对一位青年的人格蓄意的、下流的和恶毒的攻击。

《柯林斯英汉双解大词典》

The young candidate was victimized by the vicious mud-slinging tactics of his opponent and had to drop out of the running.

这位年轻的候选人受其对手恶意诽谤的手段的伤害，不得不退出竞选。

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As an outsider, I think it is so cruel to the kids, they are so young and innocent, they don't know about the world, why should they deserve those vicious words.

作为一名局外人，我觉得这对孩子来说很残酷，他们是那么的年轻和天真，对世界都了解不深，为什么他们要承受这样恶毒的话。

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The 1991 Dangerous Dogs Act was introduced after a spate of vicious attacks on young children and is designed to make it almost impossible to own a Pitbull without complying with strict regulations.

BBC: News | UK | Dangerous dogs threaten a comeback

Knowing the Chinese fondness for legends, I summon up some Celtic tall tales from my childhood that involve ferocious warriors, vicious kings, an improbably large potato, a brave young prince and the inevitable triumph of good.

BBC: A Beijing state of mind