cadmium copper

例句：

1. 1. The cadmium in the paint is toxic to humans.
   油漆中的镉对人有毒。
2. 2. Copper and zinc are both important metals for construction.
   铜和锌都是建筑中重要的金属。
3. 3. Mercury is a heavy metal that can be toxic if swallowed or absorbed through skin.
   汞是一种重金属，如果吞下或通过皮肤吸收，可能会有毒。