Scientists say plastic-to-oil technology is still new and developing. They say it is not yet known if the process is environmentally friendly. And some question whether turning plastic into oil can even be considered "recycling."科学家称将塑料转化为油的技术仍很新颖,还处于发展阶段.他们说尚不清楚这个过程是否有利于保护环境,也有人质疑这种将塑料转化为油的过程是否可以称作"回收".
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