Hayley教口语，“毫不留情”用英语怎么说？

To offer (someone) no mercy, concession, indulgence, or leeway.

不给(某人)仁慈、让步、纵容或回旋余地

give 有时也可用 grant 来取代

例：

The company will give no quarter to those who violate the rules and regulations.

公司对违反规定者绝不宽待。

John granted no quarter to anyone that hurt his reputation.

约翰绝不会宽恕任何损害他名誉的人。

The professor was harsh on lazy students. During class, he gave them no quarter.

教授对懒惰的学生特别严厉，上课时他不会让他们好过的。