1. When addressing this question, consider the historical context and the types of pollution. You can discuss how industrialization, urbanization, and population growth have contributed to increased levels of certain pollutants such as air and water pollution. 2. However, it's also important to recognize advancements in technology and regulations that have aimed to reduce pollution. Mention how in some areas, efforts to control emissions and waste have improved environmental conditions compared to the past. Provide a balanced view by acknowledging both the increase in factors causing pollution and the measures taken to mitigate it.

1. 考慮到歷史背景和不同類型的污染時，請回答這個問題。您可以討論工業化、城市化和人口增長如何導致某些污染物（如空氣和水污染）的濃度增加。 2. 但同時，也要重視科技和法規的進步，這些措施旨在減少污染。提到，在某些地區，對控制排放和廢棄物的努力已經改善了環境條件。通過承認導致污染增加的因素以及採取的措施，提供一個平衡的觀點。