the main advantages of the conference system to shippers are stability of freight rates and regularity of services the disadvantages are obvious rates are usually high rates do not fluctuate according to supply and demand as in tramp service rules and procedures are inflexible
会议制度对托运人的主要优点是运价稳定和服务规律，缺点是明显的，费率通常很高，不随供需而波动，因为在不定期运输服务中，规则和程序是不灵活的
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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