物质

• Earthworms may produce antibiotic substances .
  蚯蚓可以产生抗菌物质。
• This tumor has gelatinous material within it .
  肿瘤内含胶冻样物质。
• An example is the emission of light from matter .
  物质的发光即为一例。
• Alcohol is a solvent of resinous substances .
  酒精是树脂性物质的溶媒。
• These agents were called "cathode rays" .
  这些物质被称为“阴极射线”。
• Marie found another called thorium .
  玛丽发现了另一种物质，叫钍。
• Caffeine and nicotine are stimulants .
  咖啡因和尼古丁是刺激物质。
• This is an acrid and pungent substance .
  这是一种辛辣而带刺激性的物质。
• No material is perfectly transparent .
  没有一种物质是完全透明的。
• The non-absorbed material is removed .
  不能吸附的物质即被分出去。