n. undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities
n. 污染, 玷污
[化] 污染
1. Pollution can harm both the environment and our health.
污染会对环境和我们的健康造成伤害。
2. Many cities are working to reduce air pollution.
许多城市正在努力减少空气污染。
3. Water pollution affects marine life and ecosystems.
水污染影响海洋生物和生态系统。