Black shales will become a new resource of PGE and rare metals.

黑色岩系将成为PGE和稀有金属的一种新来源。

But resources (such as rare metals, oil, and fertilizer) didn't diminish.

但是，资源(比如稀有金属、石油或者肥料)并没有减少。

COBRA: Yes, there are many so called rare minerals and rare metals on the moon.

是的，月球上有许多所称作的稀有矿物和稀有金属。

These projects cover oil, gas and ferrous metals, non-ferrous metals and rare metals.

这些项目涉及油、气方面，以及黑色金属、有色金属和稀有金属方面。

Nickel is one of the rare metals, and it is indispensable to plant, animal and human beings.

镍是一种稀有金属元素，也是动植物和人的必需营养微量元素。