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The materials from e-waste include iron, copper, gold, silver and aluminum.

电子垃圾中的材料包括铁、铜、金、银和铝。

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There, they keep other creatures in check, distribute seeds, and clean dead and decaying materials from the ground.

在那里，他们控制其他生物的数量，将植物种子带往各地，清除地面上衰败和腐烂的物质。

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We actually made them ourselves," "We bought the materials from local companies.

VOA: standard.2009.12.04

So, if we're going to go to the moon, we're going to go to Mars,we want to be able to produce oxygen, structural metals and photovoltaic materials from in situ resources.

如果我们要去月球上，我们要去火星上，我们则必须要制造,氧气，结构金属和光电材料,就在原地制造。

麻省理工公开课 - 固态化学导论课程节选

I usually ask for advice from a friend who knows those materials very well.

我都会向一个精通电子产品的朋友请教。

What kind of 课堂 - SpeakingMax英语口语达人

One of their objectives is to understand how to keep certain materials from being weaponized.

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Access to goods manufactured abroad and raw materials from overseas guarantees consumer choice and competitive prices.

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Delta disposes its carpets in a similar way, saving 340 tons of materials from the dumpster.

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