disease

decease, disease

这两个单词的拼写仅有一个字母不同。
decease: ／di'si: s／是“死亡”、“去世”；与death相比，decease是正式用语，常见于法律条文中。

• upon the decease of so-and-so，the sum of money will pass to his wife and children.
  某某死后，整笔钱归他妻子及儿女所有。
• the decease rate in that country is very high.
  那个国家的死亡率很高。
• the general's decease left the army without a leader.
  将军死亡使这支军队群龙无首。

disease: ／di'zi:z／是“患病”、“疾病”。acute disease是“急性病”；chronic disease是“慢性病”； family disease是“遗传病”。

• the task of a doctor is to prevent or cure diseases.
  医生的职责是预防或冶疗疾病。
• nowadays more and more people treat diseases by acupuncture.
  如今愈来愈多人用针灸治疗疾病。
• your right lung is diseased.
  你的右肺有病。

illness, sickness, disease, complaint

这些名词均有“疾病”之意。
illness: 不具体指，而是泛指一切疾病，强调生病的时间或状态，语体较sickness正式一些。
sickness: 较口语化，可与illness换用，但还可表示“恶心”。
disease: 指具体的疾病，且通常较严重，发病时间也较长。
complaint: 现代英语中，既可指症状，也可指疾病。

名词 disease:

1. an impairment of health or a condition of abnormal functioning

1. The rapid spread of the disease is alarming the medical authorities.
   这种疾病的迅速蔓延使医疗当局感到忧虑不安。
2. The treatment arrested the growth of the disease.
   治疗抑制了病情的发展。
3. The entire population was wiped out by the terrible disease.
   所有的居民都被可怕的疾病夺去了生命。
4. It is reported that this disease attacks the central nervous system.
   据报道说这种疾病破坏中枢神经系统。
5. He postulated that a cure for the disease will have been found by the year 2000.
   他推断到2000年能研究出治愈该病的方法。
6. The disease is still in its primary stage.
   这疾病仍然在初发阶段。
7. The poor man has a serious disease of the liver.
   这个可怜的人患有严重的肝病。
8. Many diseases are caused by bacteria.
   许多疾病是由细菌引起的。