Editorial Note: This article is written with editorial review and topic relevance in mind.
Polyethylene terephthalate (pet) plastic is used today in textile fibers, packaging materials as disposable or reusable bottles. 一、pet compact教材特点 pet compact一书为剑桥大学考评部主编，适合中长线备考的考生。 本书分为8单元，每单元一个话题，以话题内容串联全书，贯穿学习、生活、娱乐、活动等，.
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