病因 (bìng yīn) — cause of disease; etiology

Definition

Examples

• 吸烟是很多疾病的病因。
  Xī yān shì hěn duō jí bìng de bìng yīn.
  Smoking is the cause of many diseases.
• 医生正在调查这种病的病因。
  Yī shēng zhèng zài diào chá zhè zhǒng bìng de bìng yīn.
  The doctor is investigating the cause of this disease.
• 科学家找到了这种罕见病的病因。
  Kē xué jiā zhǎo dào le zhè zhǒng hǎn jiàn bìng de bìng yīn.
  Scientists have found the cause of this rare disease.