escalate
词根词缀：
escalade n. 攀登
escal 梯子 + ade 动作 → 爬梯子的动作 → 攀登
escalate v. 逐步上升
escal 梯子 + ate 做，造成，使… → 爬梯子使人逐步上升 → 逐步上升
escalation n. 逐步上升；逐步增强
escalat〔e〕逐步上升 + ion 动作或状态 → 逐步上升；逐步增强
escalator n. 自动扶梯
escal 梯子 + ator 表名词 → 自动扶梯
数据来源：新东方英语词汇速记大全
相关例句：
Unfortunately, plague can be difficult to detect and can quickly escalate in severity.
不幸的是，瘟疫可能很难检测和可以快速升级的严重性。
The Taliban seized the moment to escalate their attacks.
塔利班抓住了将进攻升级的时机。
He also helped to escalate the Afghan war, if with a longer-term vision that is harder to discern.
也许是出于人们更难以认清的长期愿景，他还帮助了阿富汗战争的升级。
His job was to set policy and to escalate issues that were reported to him.
他的工作是制定政策以及将报告给他的问题升级扩大。
Now you switch into the present tense to draw your listener in as you escalate the problem.
当你在升级问题的时候，你要转换进入到现在时态来吸引你的听众。
In the future, the threat will likely escalate to physical damage of technology networks and infrastructure.
在未来，这种威胁可能会逐步升级为对技术网络和基础设施的物理性破坏。