They hold mineral salts from the earth.

他们含有土地中的矿物盐。

The ash is coated with mineral salts, and they're mainly sulfur and chlorine and sometimes fluorine.

火山灰上覆盖着矿物盐，主要是硫和氯，有时还有氟。

Kenya's government has provided some emergency supplies such as water, grasses and mineral salts to help the animals.

肯尼亚政府已经提供了一些紧急物资，如水、草和矿物盐，来帮助这些动物。

" I can make you an ointment for that, " said Haldon, " and there are certain mineral salts that will toughen your skin" .

" 我可以为你调一帖药膏，" 哈尔顿提出，" 还有多擦点矿物盐，可以让皮肤更坚硬。"

They do this by separating urea, mineral salts, toxins, and other waste products from the blood.

它们通过从血液中分离尿素、矿物盐、毒素和其他废物来达到这一目的。