ebullition
noun formal uk/ˌeb.əˈlɪʃ.ən/ us/ˌeb.əˈlɪʃ.ən/
[ U ]（水等）沸腾
the state or act of boiling
The ebullition ceased, and the compound changed to a dark purple. 沸腾停止了，化合物变成了深紫色。
[ C ]（思想、感情等的）奔放，洋溢，兴高采烈
a sudden strong expression of an emotion
ebullitions of temper/rage 勃然大怒
a sudden ebullition of passion 突然间的激情四射