用药不当会引起严重的不良反应。

The improper use of medicine could lead to severe adverse reactions.

《柯林斯英汉双解大词典》

他处理事务的严重不当使得公司急需重组。

His gross mismanagement left the company desperately in need of restructuring.

《柯林斯英汉双解大词典》

进行这项工作不得有不当的延误。

The work should be carried out without undue delay.

《牛津词典》

And shielding is a little bit of a misnomer because it's not actually that's the electron's blocking the charge from another electron, it's more like you're canceling out a positive attractive force with a negative repulsive force.

屏蔽有一点点用词不当,因为它事实上不是,电子阻挡了来自另一个电子的电荷,它更像你在用一个负排斥力，抵消一个正吸引力,但是屏蔽是考虑这个问题,的很好的方式。

麻省理工公开课 - 化学原理课程节选

And he's saying that, you know, "This grasp right now is damaging tissue because it's badly designed, etc."

来到我们课堂的医生会说，“因为仪器设计不当，现在的抓取方法会破坏组织等等。”

MIT用数字说话 - SpeakingMax英语口语达人

Adults think that when an ugly kid misbehaves it's because they have an ugly soul while the attractive kid, "oh, that little scamp, somebody must have been bothering him."

大人觉得当丑小孩行为不当时,是因为他们的灵魂很丑陋,如果是好看的小孩行为不当，”那个小顽皮，一定是别人烦到他了“

耶鲁公开课 - 心理学导论课程节选