例句與造句

1. Look in your modern fridge and is has expanded polyurethane foam.
2. In 2007, lignin extracted from shrubby willow was successfully used to produce expanded polyurethane foam.
3. In 1965, he started to work with plastics, first with plastic moulds of human imprints, then from 1966 by pouring expanded polyurethane, which was allowed to expand and solidify.
4. It's difficult to find expanded polyurethane in a sentence. 用expanded polyurethane造句挺難的