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A substance believed to maintain life indefinitely.
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长生不老药被认为可以使生命无限的物质 |
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A substance composed chiefly of the dung of sea birds or bats, accumulated along certain coastal areas or in caves and used as fertilizer.
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鸟粪一种主要由海鸟或蝙蝠的排泄物构成的物质，在某些海岸或山洞中不断积累，用做肥料 |
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A substance containing chemical agents or abrasive particles and applied to smooth or shine a surface.
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上光剂；擦亮剂含有化学媒质或粗糙微粒的一种物质，被用来打光或擦亮一个表面 |
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A substance formed as a necessary stage in the manufacture of a desired end product.
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中间产物在生产预计的最终产品的必需阶段中形成的物质 |
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A substance or an agent that causes two or more objects or parts to cohere.
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黏合剂使两个或多个对象或部分连结起来的物品或媒介 |
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A substance similar to that found in the cough syrups is found in hot red pepper. Use red (cayenne) pepper with caution - it can irritate your tummy.
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它含有类似于咳嗽药水的物质。但要小心使用，因为它会刺激胃部引起不适。 |
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A substance that destroys or inhibits the metabolic action of a vitamin.
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抗维生素一种破坏或抑制维生素的新陈代谢功能的物质 |
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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。 |
