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1·This is the ineffaceable track of the greatest single avalanche in recorded history.

这是在有文字记载的历史上最大的一次崩落所留下的难以消除的痕迹。

2·As a marshal of the PLA, Luo Ronghuan made an ineffaceable contribution to the theory and practice in our army's cadre work during his military car eer of36 years.

罗荣桓元帅在三十六年的军事生涯中，从事了大量的军队干部工作，对我军干部工作的理论与实践，作出了不可磨灭的贡献。