C2 noun /ˈtɪŋktʃər/
tincture
轻微的痕迹,一种通过将药物溶解在酒精中制成的药物
Meaning
a slight trace of something; a medicine made by dissolving a drug in alcohol
Example
There was a tincture of sadness in her smile.
她的微笑中有一丝悲伤。