形容达到极深极重的程度。
明·施耐庵《水浒传》第八十回高太尉着令医人治疗，见丘岳重伤，恨梁山泊深入骨髓。”
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Learn the next connected idiom: 深入骨髓 (shēn rù gǔ suǐ) → 随时随地 (suí shí suí dì)
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