单语范例（未经PONS编辑处理）
英语
- Earths natural greenhouse effect makes life as we know it possible.en.wikipedia.org
- It is also about 30 degrees cooler than it would be if the earth's natural greenhouse effect were the only influence on climate.topnews.net.nz
是否要添加一些单词、短语或翻译？
请发送新条目。