black bile

1. Melancholy resulted from excess black bile, while dominance of blood made one sanguine;
   忧郁源于黑胆汁­过剩，而血液占优势使得一个人乐观向上；
2. Hippocrates: Because of an excess of black bile and a deficiency of choleric humour.
   希波克拉底：由于黑胆汁分泌过多而胆汁分泌不足。
3. The term melancholy derives from the Greek words for black bile.
   “忧郁”一词源于希腊文中表示“黑胆汁”的词。
4. Study on the Black Pigment Gallstone Formation Caused by Nanobacteria Infection of Bile in Rabbit
   胆汁纳米细菌感染致兔胆囊黑色素结石的实验研究
5. Originally, humor meant liquid or fluid in Latin, denoting primarily blood, phlegm, black bile, and yellow bile in medical terms.
   幽默一词起源于拉丁语，意为液体、流体，医学上指代血液、粘液、黑色胆汁与黄色胆汁。

noun

1. a humor that was once believed to be secreted by the kidneys or spleen and to cause sadness and melancholy

   Synonym:    melancholy