Any type of solid or semi solid organic material of natural or synthetic origin, generally of high molecular weight with no defined melting point. Most resins are polymers.
一类固体或半固体的天然的或合成的有机材料，一般为无清晰熔点的高分子量材料，多数树脂为聚合物。
Halohydrocarbon is one of the most important organic compounds and widely used in chemical industry, agriculture, material, environmental protection and modern organic synthesis.
卤代烃是一类重要的有机化合物，在化学工业、农业、材料、环保及现代有机合成中有着广泛的应用。
Cellulose is the most abundant organic raw material in the world, and it is the only renewable resource that is available in large quantities.
纤维素是自然界中存在最广泛的一类碳水化合物，同时它也是地球上数量最大的再生资源。
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