另一个令人振奋的发展是生物塑料。 过去二十年来，在某些短寿命应用领域（如包装和农业 ） ， 生物塑料已开始与基于石油的产品竞争。
Another promising development is bioplastics, which have begun to compete with petroleum-based products in certain short-lifespan applications – such as packaging and agriculture – over the last two decades.