这种现象通常用 "negative phenomenon" 或 "unfavorable phenomenon" 来表示。这个词组表示不利或有害的事物或现象。

来源：这个词组来自于英语中 "negative" 和 "phenomenon" 的组合。"Negative" 指否定或消极的，而 "phenomenon" 指现象或事物。

英文例句:

The rise in crime rates is a negative phenomenon that needs to be addressed.
(犯罪率上升是需要采取措施解决的不利现象。)
The trend towards increasing obesity is a negative phenomenon that has serious health imppcations.
(肥胖率上升的趋势是一种严重影响健康的不利现象。)
The spread of fake news is a negative phenomenon that can lead to misinformation and confusion.
(假新闻的传播是一种可能导致误导和困惑的不利现象。)