intensify
verb [ I or T ] uk/ɪnˈten.sɪ.faɪ/ us/ɪnˈten.sə.faɪ/
C2 加强，增强；强化
to become greater, more serious, or more extreme, or to make something do this
Fighting around the capital has intensified in the last few hours. 首都周围的战斗在过去的几小时里变得更加激烈。
Synonym: escalate