plumb

v. /plʌm/ C2

探索；深究

To measure depth, or to understand something deeply after exploring it.

仙境例句

Alice tried to plumb the Caterpillar's strange advice, but it only made her head hurt.

爱丽丝想弄明白毛毛虫那奇怪的忠告，可只弄得自己头疼。