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.
電視裡充斥著犯罪和無端的暴力。
...his insistence on offering gratuitous advice.
他堅持要提供一些無謂的建議
1. in an uncalled-for manner;
They rebuild their houses for them gratuitously when they are ruined.
如果他們的房屋要坍了,就會有人替他們重蓋,不要工資.
He insulted us gratuitously.
他在毫無理由的情況下侮辱了我們.