escalate
/ˈɛskəˌleɪt/
increase in extent or intensity
中文释义：升级；加剧
The conflict between the two countries escalated into a full-scale war.
两国之间的冲突升级为全面战争。
Rising tensions in the region could escalate if diplomatic efforts fail.
如果外交努力失败，该地区日益紧张的局势可能会升级。