1. When answering this question, consider discussing the regulatory and social pressures that have led companies to reduce pollutants. Mention government regulations that enforce limits on emissions and pollutants, which compel companies to adopt cleaner technologies and practices. 2. Additionally, discuss the role of public awareness and consumer demand for environmentally friendly products, which have pressured companies to become more sustainable. Highlight examples of industries where significant reductions in pollutants have been observed due to these pressures.

1. 當回答這個問題時，請考慮討論導致公司減少污染物的監管和社會壓力。提到強制公司採用更清潔的技術和實踐的政府法規，規定排放和污染物的限制。 2. 此外，討論公眾意識和消費者對環保產品的需求的作用，這已迫使公司變得更具可持續性。舉例說明在哪些產業中，由於這些壓力，污染物有顯著減少。