gratuitously
平白
If you describe something as gratuitous, you mean that it is unnecessary, and often harmful or upsetting.
There's too much crime and gratuitous violence on TV.
电视里充斥着犯罪和无端的暴力。
...his insistence on offering gratuitous advice.
他坚持要提供一些无谓的建议
1. in an uncalled-for manner;
They rebuild their houses for them gratuitously when they are ruined.
如果他们的房屋要坍了,就会有人替他们重盖,不要工资.
He insulted us gratuitously.
他在毫无理由的情况下侮辱了我们.