The extensive data sources, combined with computer simulations, created a timeline of ocean temperature changes, including cooling from volcanic outbreaks and warming from fossil fuel emissions.
2016年12月四级真题（第二套）阅读 Section A
柯林斯高阶英汉双解学习词典释义
N-COUNT
（暴力活动、疾病等的）爆发，突然发生
If there is an outbreak of something unpleasant, such as violence or a disease, it suddenly starts to happen.