有底 ( yǒu dǐ )

词语解释

  1. 有底 (yǒudǐ)
    1. 知道底细或内情而有把握 know how things stand and feel confident of handling them;be fully prepared for what is coming

國語辭典

有底 (yǒu dǐ)
  1. 心中對某事甚熟悉而有把握。