Companies start selling a product that transforms daily life. Scientists warn it is dangerous. Dozens of countries try to reach a deal to rein in its use but others fight back and slow action.
设想一下:有些公司在销售一种已深度融入日常生活的产品。科学家警告它存在危险。数十个国家试图达成协议限制其使用,但也有国家坚决反对、拖慢进展。
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