tonic
noun uk/ˈtɒn.ɪk/ us/ˈtɑː.nɪk/
(MEDICINE)
[ C ]滋补剂
a liquid medicine that has the general effect of making you feel better rather than treating a particular health problem that you might have
[ S ] informal使人为之一振的事物
something that makes you feel stronger or happier
The magazine is lively and interesting - the pictures alone are a tonic. 这本杂志生动有趣——光这些图片就很有视觉冲击力。
(DRINK)
[ C or U ] (also tonic water)奎宁水（有气饮料，味苦，可单独饮用，也可加到酒中饮用）
carbonated (= with bubbles) water with a bitter taste that can be drunk on its own or added to alcoholic drinks
Two gin and tonics, please. 请来两份杜松子酒加奎宁汽水。