并马更吟去，寻思有底忙。

寻思

寻思 (xúnsi) 想;思考 think sth. over

有底

有底 (yǒudǐ) 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

李商隐名句，赠子直花下名句。注释由系统生成，仅供参考