They do not need cobalt, nickel, and even lithium which are the three most expensive battery materials.

它们不需要钴、镍，甚至锂这三种最昂贵的电池材料。

And other metals, including cobalt, nickel, and iron, are attracted to magnets, even though they aren't magnets themselves.

其他金属，包括钴、镍和铁，都会被磁铁吸引，即使它们本身不是磁铁。

What is even more striking, though, is that by then these factories should be obtaining half their raw materials, including valuable substances such as lithium, cobalt, nickel and manganese, from recycled batteries.

然而，更引人注目的是，到那时这些工厂应该从回收电池中获得一半的原材料， 包括有价值的物质， 如锂、钴、镍和锰。

My indicator is 23 - as in, a little over a decade from now, U.S. demand for cobalt, nickel and lithium will be 23 times greater than it was just a couple years ago.

我的指标是 23，也就是说，从现在起十多年后，美国对钴、镍和锂的需求将是几年前的 23 倍。