And,showerheads made of plastic seemed to have higher bacteria levels than metal ones.

VOA: special.2009.10.13

This device held here is really made of mainly plastic and a little bit of metal.

这个装置大部分是用塑料做的,还有一点金属

耶鲁公开课 - 生物医学工程探索课程节选

We're familiar with polymers, plastics in our daily life; the chairs that you're sitting on are made of a kind of a plastic polymer that is basically an organic chemical that is cross-linked together.

我们应该很熟悉聚合物,比如日常生活中的塑料就是,你们坐的椅子,就是由一种塑料聚合物构成,它由基本的有机化学物质交联在一起

耶鲁公开课 - 生物医学工程探索课程节选

The feathers on the flying model were made of plastic.

VOA: special.2010.03.16

Researchers at Duke University in North Carolina have developed a small pouch made of foil and plastic.

VOA: special.2010.05.24

But if you look more closely, the sculpture "Shapeshifter" is made out of old plastic chairs that have been carefully cut and bolted together.

VOA: special.2009.11.13

If you move closer to the sculptures, you realize they are made up of thousands of carefully stacked small plastic bottles for storing medicines.

VOA: special.2009.07.17

These replacement joints can be made of combinations of metal alloys, plastic and ceramic, but new research shows that it might be possible to regenerate damaged joints using a patient's own stem cells.

VOA: standard.2010.08.11