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| A substance, especially an enzyme, that initiates or modifies the rate of a chemical reaction in a living body; a biochemical catalyst. |
中文意思：
生物催化剂能在活的体内产生化学反应或改变生物体内化学反应速度的物质，尤指酶；生物化学催化剂 |
以下为相关句子列表(点击查看，可以看对应的解释）：
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A substance that has been scorched, burned, or reduced to charcoal.
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烧焦物被烤焦、烧焦或烧成木炭的物质 |
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A substance that prevents the clotting of blood.
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抗凝血剂防止血液凝结的物质 |
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A substance that retards or arrests a chemical reaction.
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反催化剂延缓或阻碍化学反应的物质 |
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A substance that when introduced into the body stimulates the production of an antibody. Antigens include toxins, bacteria, foreign blood cells, and the cells of transplanted organs.
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抗原当被引入人体内可以促进抗体产生的物质。抗原包括毒素，细菌，异体血球和移植器官的细胞。 |
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A substance to be so analyzed.
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被分析物，被化验物被化验的物质 |
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A substance, especially an enzyme, that initiates or modifies the rate of a chemical reaction in a living body; a biochemical catalyst.
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生物催化剂能在活的体内产生化学反应或改变生物体内化学反应速度的物质，尤指酶；生物化学催化剂 |
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A substance, often a liquid such as ethylene glycol or alcohol, mixed with another liquid to lower its freezing point.
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防冻剂，防冻液，抗凝剂一种物质，通常是液体，如乙二醇或酒精，和另一种液体混合来降低冰点 |
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A substance, such as a vitamin or mineral, that is essential in minute amounts for the proper growth and metabolism of a living organism.
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微量养料；微量营养元素一种对生物的正常生长和新陈代谢极其重要的微量物质，如一种维生素或矿物质 |
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A substance, such as an antibody, capable of dissolving or destroying cells.
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细胞溶素一种能溶解或破坏细胞的物质，如抗体 |
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A substance, such as boron, added in small amounts to a pure semiconductor material to alter its conductive properties for use in transistors and diodes.
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掺杂质，掺质剂加入纯半导体材料中的少量硼等物质，用于晶体管和二极管中以改变半导体的导电率 |
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A substance, such as paste or cement, that provides or promotes adhesion.
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粘合剂提供或促使粘附的物质，如浆糊或水泥 |
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