mini还是全文听写模式，很多童鞋可能进来看到【专八】可能会有点胆怯，刚开始是会感觉到有点吃力哦，但这就是专八。希望大家可以耐心的认真听写O(∩_∩)O~

Today's lecture is about the Greenhouse Effect.
Currently, carbon dioxide accounts for more than 60% of the enhanced greenhouse effect caused by the increase of greenhouse gases, and the level of carbon dioxide in the atmosphere is increasing by more than 10% every 20 years. If emissions of carbon dioxide continue to grow at current rates, then the level of the gas in the atmosphere will likely double, or possibly even triple, from pre-industrial levels during the 21st century. Therefore, to lesson those long-term effects, many nations, communities and individuals are taking action now to reduce greenhouse gas emissions and slow global warming by reducing dependence on fossil fuels, increasing the use of renewable energy, expanding forests, and making lifestyle choices that help to sustain the environment. Whether they will be able to recruit enough people to join them, and whether their combined efforts will be enough to head off the most serious effects of global warming, are open questions that can only be answered by future development.