v.报复；回敬
He sought every opportunity to retaliate on his persecutors. 他寻求每一个机会向迫害他的人们复仇。
He was waiting for an opportunity to retaliate. 他在伺机报复。
He slapped his sister, who retaliated by kicking him. 他打了妹妹一巴掌，他妹妹回敬他一脚。
