以下为句子列表：
英文: 31 Bring a mug to the office instead of using polystyrene cups.
中文: 带一个大杯子到办公室，不要用一次性塑料杯子。
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英文: A 300-mm thick polystyrene plate, which had 100-mm wide and 100-mm deep trenches at 400-mm intervals, was employed for the substrate.
中文: 一个300微米厚的聚苯乙烯盘，100微米宽、100微米深的沟壑按400微米雕刻，被用来做底盘。
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英文: Abstract: Unsaturated polyester with low shrinkage composied of anti-shrinking agent,thermoplastics,dispersion-stabilizer,a kind of graft copolymer made from styrene and saturated polyester,shaped like a comb for its molecular structure and UPR in certain
中文: 文摘:研究了当用热塑性树脂作为不饱和聚酯树脂低收缩剂时，合成了以苯乙烯为主链，聚酯为枝链的梳状接枝共聚物，作低收缩剂的分散稳定剂，配合相应组成的不饱和聚酯树脂得到了具有低收缩特性的不饱和聚酯组成物。
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英文: All items within the same carton are to be individually wrapped and have polystyrene or equivalent packaging material between pieces to avoid any damage to other components within the carton.
中文: 所有的款如果用同样的纸箱包装要单独缠好,中间要用东西隔开,以避免纸箱里东西的碰撞.
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英文: Arbutus resins were obtained by heterogeneous graft copolymerhation of polypropylene(PP) with acrylonitrile (AN) and styrene (St).
中文: 丙烯腈（AN）—苯乙烯（St）与聚丙烯（PP）非均相接枝共聚，得杨梅形树脂。
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