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1.carbohydrate n.碳水化合物，糖类(organic compound, such as sugar and starch, containing carbon, hydrogen and oxygen) 词根记忆：carbo(碳)+hydr(水)+ate --碳水化合物 In cold-water habitats, certain invertebrates and fish convert starches into complex carbohydrates. 2.carbonate n.碳酸盐(a saIt or ester‘of carbonic acid) 词根记忆：来自carbon(n.碳) 例:These sediments are composed of calcium carbonate shells of marine organisms. 同根词：carbonize(v.碳化) 3.carcass n．尸体(corpse)；（屠宰后）畜体(the dressed body of a meat animal)；（人的）身躯(the living, material, or physical body) 联想记忆：car(汽车)+cass(看作cast投掷)一发生车祸，汽车被甩到一边，留下尸体-（动物的）尸体 例:In Pleistocene camivore species, ofder individuals consumed carcasses as thoroughly as younger individuals did. 4.carcinogen n.致癌物(substance that produces cancer) 词根记忆：carcino( ma)《癌）+gen（产生）一产生癌一致癌物 例:The tests indicated that the chemical was a carcinogen in laboratory-rats. 5.carcinogenic a．致癌的：致癌物的（causingicancer） 例:来自carcinogen(n.致癌物质) 例:The two insect-repelling chemicals in the secretions of the millipedes are carcinogenic for humans but do not appear to be carcinogenic for capuchins. | 
