1.(opponent)敌人；仇敌；反对者
The Government's political enemies were quick to pick up on this series of disasters.政府的政敌迅速借这一系列灾难向其发难。
2.the enemy of sth
(something that stops something else from happening or developing)…的危害物；…的大敌
Alcohol is the enemy of healthy sperm and eggs.酒精危害精子和卵子的健康。
Reform is the enemy of revolution.改革是革命的大敌。