selenium

We’d normally get minerals such as selenium and copper from plants.

我们通常从植物中获取矿物质比如硒和铜。

It contains a lot of tryptophan, manganese, iron, protein and selenium.

它含有很多色氨酸，锰，铁，蛋白质和硒等元素。

Small amounts of selenium are essential for health and help build a strong immune system to fight off infections and diseases.

少量的硒元素对人体健康是必要的，能帮着建立一个抵抗传染病和疾病的免疫系统。