内心痛苦得象刀割一样。
元·秦简夫《赵礼让肥》第一折待着些粗粝，眼睁睁俺子母各天涯，想起来我心如刀割。”
殷郊又见殷洪，～，意似油煎。★明·许仲琳《封神演义》第九回
Learn the next connected idiom: 心如刀绞 (xīn rú dāo jiǎo) → 绞尽脑汁 (jiǎo jìn nǎo zhī)
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