The U.N. says that more than 90% of single use plastic is produced from fossil fuels or unrecycled material.

联合国表示，超过90%的一次性塑料是由化石燃料或不可回收的材料生产的。

As a result, unrecycled goods began piling up in Seoul's neighborhoods.

结果，未回收的物品开始堆积在首尔的街区。

But the bigger problem remains: what to do with all of the unrecycled waste.

但更大的问题仍然存在：如何处理所有未回收的废物。