The main idea of the given text is that human activities have had a profound impact on the environment, causing severe changes to the Earth. It is our responsibility to reduce carbon emissions and develop sustainable practices to protect the planet for future generations.
解释给定文本的主要思想：人类对环境产生了深远的影响，导致了地球发生了许多剧烈的变化。我们应该努力减少碳排放，发展可持续的做法，以保护地球为未来的世代。