in a very cruel and violent way

The old man had been brutally attacked/murdered. 老人遭到残酷的袭击/谋杀。

They treated the animals brutally. 他们残忍地对待动物。

in a way that is likely to hurt someone's feelings or offend people

To be brutally honest/frank, you look fat in that dress. 不讲情面坦率地说，你穿那件衣服看起来很胖。

The show was a brutally realistic portrait of police corruption. 该节目是警察腐败的残酷现实写照。

"It's your own fault," he said brutally. “这是你自己的错，”他粗暴地说。

in a way that is very difficult to deal with and is likely to make someone suffer

Winters here can be brutally cold. 这里的冬天非常寒冷。

It's a brutally competitive market. 这是一个竞争异常激烈的市场。