音标：['tɒnik]
n. 补药, (音乐)主调音或基音
a. 滋补的, 声调的, 使精神振作的
【医】 紧张的; 强直的; 强壮的, 补
在线英汉词典

tonic的短语、例句：

tonic 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.