nebula

• 指星际空间中由气体和尘埃组成的巨大云状天体；在医学语境中，也可指角膜上的混浊，或用于喷雾器的液体药剂。

A noun referring to an immense cloud of gas and dust in interstellar space, or in medical contexts, a cloudy spot on the cornea or a liquid preparation for an atomizer.

不规则复数

1. Medicinal liquid preparationC1formalmedical

   A liquid medicine designed to be used in an atomizer or nebulizer for inhalation.

   雾化药液

   • The doctor prescribed a nebula for his respiratory condition.
   • She used a nebula in the atomizer to ease her breathing.
   • The pharmacist prepared a nebula for the patient's nebulizer.

2. Cloudiness of urineC2formalmedical

   A medical condition characterized by a cloudy appearance of the urine.

   尿混浊

   • The lab report indicated a nebula in the urine sample.
   • Cloudiness, or nebula, can be a sign of infection.
   • The doctor noted a nebula during the urinalysis.

   同义词cloudinessopacityturbidity

3. Interstellar cloudB2formalscientific

   An immense cloud of gas, primarily hydrogen, and dust in interstellar space, often a site of star formation.

   星云

   • The Orion Nebula is visible to the naked eye.
   • Astronomers studied the nebula to understand star birth.
   • The Hubble telescope captured stunning images of the nebula.

4. Corneal opacityC2formalmedical

   A faint, cloudy spot on the cornea of the eye, often a result of injury or disease.

   角膜混浊

   • The ophthalmologist detected a nebula on his cornea.
   • A nebula can cause blurred vision if it is large enough.
   • The injury left a small nebula on her eye.