as hard as flint

• 毫不留情

as hard as flint的用法和样例：

例句

1. As you answer these questions, be brutally honest with yourself.
   回答下面的问题时，对自己毫不留情地诚实。
2. As far as sex was concerned, he had always desired individual freedom and proceeded ruthlessly to achieve it.
   谈到男女关系，他始终渴望着个人自由，并且毫不留情地设法达到目的。