exterofection

例句：

1. 1. The exterofection of the virus led to a rapid spread of the disease.
   病毒的外因作用导致疾病迅速传播。
2. 2. The researcher found that external factors could significantly affect the immune system.
   研究者发现外部因素可以显著影响免疫系统。
3. 3.Due to the exterofection of the pollutants, the air quality in the city has been severely affected.
   由于污染物的外因作用，该城市的空气质量受到了严重影响。