As a developing country with the largest population in the world,China faces major challenges of energy supply and environmental protection. Development of clean and alternative fuels for internal combustion engines is of great impor-tance.
在车用能源供应短缺与大气环境保护的双重压力下,人们一直在寻求内燃机新型清洁代用燃料。
参考来源 - 二甲醚发动机与汽车研究·2,447,543篇论文数据，部分数据来源于NoteExpress
On the other hand, alternative fuels do have drawbacks.
另一方面，替代燃料确实也有缺点。
Using alternative fuels and improving energy efficiency is thus both an ecological necessity and a technological challenge.
因此，使用替代燃料和提高能源效率既是生态需要，也是技术挑战。
Customers can bring shoes of any brand into an Adidas store to be shredded and turned into alternative fuels for energy creation instead of being burned as trash.
顾客可以把任何品牌的鞋子带进阿迪达斯店，将其粉碎制成可替代能源，而不是当成垃圾烧掉。
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