• 实际价值

practical art实用工艺practicaladj.明智的；实际的；实用的；事实上的n.实践考试practical-academic-empirical现实-理论-实证practical tactic skills training实战技能训练Practical Enterprise Informatics实用企业信息学Practicality and high efficiency实用高效Practical and facility LCR meter实用的简易型电桥practical measurement of current电流实测practical philosophical humanity实践人性论practical application of talents实际应用型人才practical and effective measures切实有效的办法practical and innovative ability实践与创新能力

1. Your estimate is theoretical, therefore it is of no practical use.
   你的意见只是理论上的，没有实际价值。
2. But you should always consider canceling a meeting which has little tangible value.
   当实际价值很小时你应该考虑取消会议。