tonic

中文： 补品、补药

1. A substance with medicinal properties intended to restore or invigorate. (uncountable) · We used to brew a tonic from a particular kind of root.
2. Tonic water. (uncountable)
3. Any of various carbonated, non-alcoholic beverages; soda pop. (US, dated, uncountable)
4. Someone or something that revitalises or reinvigorates. (figuratively, uncountable)

复数 tonics