environmental abnormality

例句：

1. 1. Thesudden drop in air quality is a cause for concern about the environment's health.
   空气质量的突然下降是环境健康状况令人担忧的原因。
2. 2. The researchers found that the pollution levels were higher than normal, indicating an environmental anomaly.
   研究人员发现污染水平高于正常值，表明存在环境异常现象。
3. 3. The government has been working hard to address the environmental anomalies that have been affecting the country's ecosystems.
   政府一直在努力解决影响国家生态系统的环境异常问题。