But not all of the copper is tinned, this one here is untinned because it's a sugar pan.

但并不是所有的铜具都是镀锡的，这里的这一个没有镀锡，因为它是一个糖锅。

Untinned copper can be dangerous and acidic foods cooked in it can turn green and make you ill or even die.

未镀锡的铜具很危险，用它煮的酸性食物会变绿，让你生病甚至死亡。