tonic
/ˈtɔnɪk; `tɑnɪk/ n
1 [C, U] medicine that gives strength or energy, taken after illness or when tired 补药; 滋补品.
2 [C usu sing 通常作单数]
(fig 比喻) anything that makes people feel healthier or happier 使人感到健康或快乐的事物
Praise can be a fine tonic. 赞美的话有时真让人感到美滋滋的.
The good news acted as a tonic on us all. 那个好消息使我们大家欢欣鼓舞.
[attrib 作定语]
the tonic effects of sea air 海上空气的保健作用.
3 [C, U] = tonic water.
4 [C] (music 音) keynote 主音.