心里有底，汉语成语，拼音是xīn lǐ yǒu dǐ，意思是心中知道底细或内情而有把握。
他心里有底一点不慌 he was not at all nervous for he knew what to expect
心里有点没底 A little no end ; No end was a little
心里还到底有没有我了 Also is there any ; I also wonder what I am
他心里有底，一点不慌。
我更希望在一个冠军队当个角色球员，我每天都与顶级球员一起训练，当你上场的时候就心里有底。
I'd prefer to be playing a lesser role somewhere where I am training with top-quality players, knowing when you play, it is in a game like this.
您将负责通过制定详细的项目计划和预算，清楚地说明和反映soa安全实现所必需的东西，确保每个人都对此心里有底。
You're responsible for making sure that everyone "gets this" by creating detailed project plans and budgets that make clear and reflect exactly what an SOA security implementation entails.
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