Zhànzhēng dàilái de cǎnjué-rénhuán de kǔnàn lìngrén bù rěn zhíshì.
The unspeakable suffering brought by war is too painful to look upon directly.
Tips
memory
惨 (tragic) + 绝 (extreme/surpassing all) + 人寰 (the human world) - so tragic that it surpasses anything ever seen in the human world. Reserve for the gravest catastrophes.
