筷子所用的材料的种类则各有不同，所选材料有竹子、木材、漆器、玉石、象牙、塑料、铝、银、以及金。

Chopsticks can be made of a variety of materials, including bamboo, wood, lacquer, jade, ivory, plastic, aluminum, silver, and gold.

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消费者已经退回了数百万个铝罐、玻璃器皿和塑料瓶。

Consumers had returned millions of aluminum cans and glass and plastic bottles.

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一定要把你用过的铝罐和塑料瓶扔在那里。

Be sure to drop your used aluminum cans and plastic bottles there.

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