恶疾 (è jí) — a severe or malignant disease (often incurable or hard to treat)

Definition

Examples

• 他多年前患上一种恶疾，至今仍未痊愈。
  Tā duō nián qián huàn shàng yì zhǒng è jí, zhì jīn réng wèi quán yù.
  He contracted a severe disease many years ago and hasn't recovered yet.
• 这种恶疾在早期很难被发现。
  Zhè zhǒng è jí zài zǎo qī hěn nán bèi fā xiàn.
  This malignant disease is very hard to detect in its early stage.
• 现代医学可以治愈一些过去的不治之症，但不是所有恶疾都能被克服。
  Xiàn dài yī xué kě yǐ zhì yù yì xiē guò qù de bú zhì zhī zhèng, dàn bú shì suǒ yǒu è jí dōu néng bèi kè fú.
  Modern medicine can cure some previously incurable diseases, but not all severe diseases can be overcome.