The copyright law currently in effect here, for instance, provides protection to local authors for works as soon as they are completed, but it requires foreigners--Americans are an exception--to register their works first.
例如現行的著作權法中，對本國人著作權採「發生主義」，即著作完成時，即享有著作權；而對外國著作，則以「登記」為取得著作權的要件﹘ ﹘只有美國人的著作因「中美友好通商條約」之故，得享國民待遇。