的意思 metals

1. Gold and silver are precious metals used in jewelry making.
黄金和白银是用于珠宝制作的贵重金属。

2. Steel is a strong metal commonly used in construction.
钢是一种坚固的金属，常用于建筑。

3. Copper is a versatile metal that is used in electrical wiring.
铜是一种多功能的金属，用于电线。

4. Aluminum is a lightweight metal used in the aerospace industry.
铝是一种轻质金属，用于航空航天工业。

5. Many coins are made of various metals such as nickel, copper, and zinc.
许多硬币由镍、铜和锌等不同金属制成。

6. The recycling of metals helps to reduce waste and protect the environment.
金属的回收利用有助于减少废物并保护环境。