英语语法分析

PET is made from two feedstocks, one of them an organic acid, the other ethylene glycol, which is relatively inexpensive.

PET由两种原料制成，一种是有机酸，另一种是相对便宜的乙二醇。

The prices of industrial fuels and feedstocks such as naphtha are not capped, yet demand for them is also growing strongly.

工业燃料和石脑油等工业原料的价格并未受到限制，但需求也在强劲增长。

Industrial biotech USES agricultural feedstocks, rather than petroleum-based ones, to produce chemicals, plastics and fuels.

工业生物技术用农业原料替代石油制品来生产化学制品、塑料和燃料。