Artificial bone and egg shells make good building materials due to their makeup of proteins and minerals.

人造骨和蛋壳是很好的建筑材料，因为它们由蛋白质和矿物质构成。

youdao

Reserves of oil and minerals have grown; their prices have not increased; and demand for materials like copper are not exponential.

石油和矿物的储量增加了，而它们的价格却没有增加；同时，对某些原材料的需求，比如铜，并未呈指数增长。

youdao

That said, the group said Apple has done a better job of avoiding conflict minerals, selling energy-efficient products, and removing hazardous materials from its devices.

从这个数据中可以看出，该组织认为苹果公司在避免冲突矿产、销售节能产品和杜绝采用危险材料方面做的非常出色。

youdao

The system has been developed with the Institute of Materials Minerals and Mining, an organisation that develops materials technologies.

BBC: Northampton metal marking set to thwart thieves

Other Iranian goods gaining increased market share in Middle Eastern and Asian countries include automobiles, minerals, and construction materials.

FORBES: Despite Being Economically Unfree, Iran's Economy Shows Resilience

Gaffney pointed out that the PRC's play for Unocal's energy and rare earth mineral assets is hardly a normal commercial transaction, but rather part of Beijing's long-term plan to dominate strategic energy resources, materials, minerals and technologies in order to provide a civilian economy that will serve China's military needs.

CENTERFORSECURITYPOLICY: Gaffney gives Hill testimony on Unocal