您要查找的是不是：
- A smaller group took a placebo, an inactive substance. 人数少的那一组则注射安慰剂??一种非活性物质。
- Most effort to control corrosion involves coating the metal with an inactive substance. 大多数防锈措施都要给金属涂上一层不活泼的物质。
- The other have half received apalosiver and inmective substance a placebo, thye an inactive substance. 志愿者不知道自己获的是那种治疗。
- An inactive substance or preparation used as a control in an experiment or test to determine the effectiveness of a medicinal drug. 无效对照剂一种无影响的物质或制剂，用来控制试验或确定药物的有效程度
- The emery is a hard metallic substance. 金刚砂是非常坚硬的金属物质。
- Some animals are inactive during the daytime. 有些动物白天不活动。
- Barium sulfate is a radiopaque substance. 钡硫酸盐是一种辐射光不能穿透的物质。
- and those taking inactive substances. 以及摄入不活跃物质的老人进行调查。
- I don't want to lead an inactive life. 我不想过沉闷的生活。
- Musk is a kind of strong-smelling substance. 麝香是一种有强烈气味的物质。
- I found his name in the inactive files. 我在非现役军人档案中找到了他的名字。
- Graphite is a soft black substance. 石墨是一种软而黑的物质。
- Bears are inactive during the winter. 熊在冬天变得怠惰。
- This substance is soluble in alcohol. 这种物质能够溶解在酒精中。
- Her account was in substance correct. 她的账目基本上是对的。
- Ammonia is a chemical substance. 氨是种化学物质。
- The substance is irritable to sensitive skin. 这种物质对敏感的皮肤有刺激性。
- An inert substance used to dilute. 稀释剂一种惰性物质
- an inactive substance that is a vehicle for a radioactive tracer of the same substance and that assists in its recovery after some chemical reaction. 一种惰性物质，是同类物质放射示踪物的载体，经化学反应痊愈后具有抵抗性。
- The question was never discussed in substance. 这问题实际上从来没有讨论过。
