If you describe the cost of something as ruinous, you mean that it costs far more money than you can afford or than is reasonable. 负担不起的; 贵得离谱的
adjective [原级] 破坏性的，毁灭性的；导致破产的，耗资巨大的；<正式>破败不堪的，损毁严重的
Many Americans will still fear the potentially ruinous costs of their legal system. 许多美国人依然会担心其司法体系可能产生的高昂费用。
