vt. & vi. 1.(使)逐步升级；(使)逐步扩大 (of war ) make or become more serious by stages
vt. & vi. 2.(使)更高，(使)更大 make or become higher,greater,etc.
句型例句
用作不及物动词
▲S+～(+A)
The cost of living is escalating.生活费用在迅速上涨。
用作及物动词
▲S+～+n./pron.
The government escalated the war by starting to bomb enemy cities.政府开始轰炸敌方的城市，使战争进一步扩大。
