synthetic rubber
柯林斯词典
1. N any of various synthetic materials, similar to natural rubber, made by polymerizing unsaturated hydrocarbons, such as isoprene and butadiene 合成橡胶
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1. N any of various synthetic materials, similar to natural rubber, made by polymerizing unsaturated hydrocarbons, such as isoprene and butadiene 合成橡胶