公共域 /gōnggòngyù/ angolul

public domain▼(realm of intellectual property which is not or no longer protected by copyrights or patents)
noun
[UK: ˈpʌ.blɪk dəʊ.ˈmeɪn] [US: ˈpʌ.blɪk doʊ.ˈmeɪn]