Another report said that samples of bubble tea contained other carcinogenic chemicals.

另一份报告称，珍奶样本含有其他致癌化学物质。

Many of the samples were also loaded with polychlorinated biphenyls, highly carcinogenic chemical compounds that were common before their international ban in 2001.

许多样本还富含多氯联苯，这是一种高度致癌的化学物质，在2001年国际禁止之前很常见。

Some sneaker tops are made from natural sources like leather, but tanning this material relies on chromium; a carcinogenic chemical that can damage freshwater ecosystems.

有一些运动鞋的鞋面是由皮革等自然资源制成的，但是需要依靠铬为材料进一步上色，而铬是一种能够破坏淡水生态系统的致癌化学物质。