糟糕的空气质量会导致许多健康问题，比如哮喘，而丢弃不当的垃圾会传播细菌，危害健康。

Bad air quality can contribute to many health problems such as asthma, and improperly discarded garbage can spread bacteria that are dangerous to health.

youdao

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》

首要问题定位不当的一个显著标志就是专注于健康而非环境问题。

A telling sign of misplaced priorities is the concentration on health, not environmental issues.

《柯林斯英汉双解大词典》

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

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