substances

例句:

• Scientists claim to have identified natural substances with cancer-combating properties.
  科学家们声称已经发现自然界的某些物质具有抗癌特性。
  来自柯林斯例句
• Substances such as ammonia give out heat when they dissolve.
  诸如氨气之类的物质在溶解时会释放出热量。
  
• The goal is complete abstention from all mind-altering substances.
  目标是彻底戒绝所有致幻物质。
  
• The substances themselves are not considered a health risk.
  来自VOA
• Mere residuary substances of a dry and fruitless life.
  来自H. Bushnell
• Confirm chemical structure of substances by NMR as required.
  来自SA