justify
提供正当理由,证明行为合理
defend
保护或支持某立场/人,防止批评或攻击
The CEO struggled to justify the large bonuses paid to executives during a period of mass layoffs.
CEO很难证明在大规模裁员期间向管理层支付高额奖金是合理的。
The lawyer worked hard to defend her client against the fraud charges.
律师努力为她的当事人辩护,对抗欺诈指控。