With the development of economy，more and more greenhouse gases are being discharged into the air. CO2 makes up about 70% of the greenhouse gases，which is considered to be one of the greatest causes of global warming. It has harmful effects，causing the sea level to rise and many natural disasters to strike.
So we must take effective measures to save our planet. First，we should use more clean energy and less coal and oil. Second，we should go to work on foot or by bus instead of driving a car if possible. Third， we should plant more trees， because plants can turn CO2 into oxygen. More importantly， we should form the habit of saving energy in our daily life.
隨著經濟的發展,越來越多的溫室氣體被排放到空氣中。二氧化碳占大約70%的溫室氣體,這被認為是全球變暖的最大原因之一。它有不良影響,導致海平面上升,許多自然災害襲擊。
所以我們必須采取有效措施來拯救我們的地球。首先,我們應該用更清潔能源和減少煤和石油。第二,我們應該步行去上班或者乘公共汽車而不是駕駛汽車,如果可能的話。第三,我們應該種植更多的樹,因為植物可以把二氧化碳轉化為氧氣。更重要的是,我們應該養成節約能源的好習慣在我們的日常生活中。
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