美国版权产业所取得的巨大成就与其不断完善的版权保护制度密不可分。
The great accomplishment achieved by the us copyright industry is closely related to its continually improving copyright protection system.
美国版权产业所取得的巨大成就与其不断完善的版权保护制度密不可分。
The great accomplishment achieved by the us copyright industry is closely related to its continually improving copyright protection system.
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