You load them into the top of a gel and a gel is - in this case it's synthetic polymer gel but it looks very much like Jell-O.

你把它安置在一段凝胶上,凝胶是--,这种合成凝胶聚合物看上去很像吉露果冻

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