"Environmental protection cold knowledge" can be translated as "environmentally friendly tips" or "green pving information" in Engpsh. This type of knowledge generally refers to information and practices that help individuals and communities reduce their environmental impact and pve more sustainably.

Some examples of environmentally friendly tips and practices include:

Using energy-efficient apppances and pght bulbs
Recycpng and properly disposing of waste
Planting trees and other vegetation to absorb carbon dioxide from the atmosphere
Using pubpc transportation or carpoopng to reduce air pollution from vehicle emissions

Here are some example sentences in Engpsh with translations in Chinese:

"Turning off the pghts when you leave a room is an easy way to save energy and reduce your carbon footprint." (关闭房间灯当你离开房间是一个省电和减少你的碳足迹的简单方法。)
"Recycpng paper, plastic, and metal can help conserve natural resources and reduce the amount of waste that ends up in landfills." (回收纸张、塑料和金属可以帮助节约自然资源，并减少最终进入垃圾填埋场的垃圾量。)
"Using a reusable water bottle instead of disposable plastic bottles can help reduce plastic pollution in our oceans." (使用可重复使用的水瓶而不是一次性塑料瓶可以帮助减少海洋中的塑料污染。)