1. The water supply was shut off due to contaminations from a nearby chemical spill.
供水被切断，因为附近的化学泄漏导致了污染。

2. The food was recalled from stores because of possible contaminations with bacteria.
食品被召回，因为可能被细菌污染。

3. The scientist discovered high levels of contaminations in the soil near the industrial site.
科学家发现工业区附近的土壤中存在高水平的污染物。

4. The hospital had to undergo a thorough cleaning to remove all contaminations and prevent the spread of infections.
医院必须进行彻底的清洁，以清除所有污染物，防止感染的传播。

5. The air quality in the city was severely affected by contaminations from vehicle emissions.
城市的空气质量受到了来自车辆排放的污染的严重影响。

6. The company implemented strict protocols to prevent contaminations in their production process.
该公司实施了严格的协议，以防止生产过程中的污染。