求翻译：进入21世纪知识经济时代，我国图书馆事业建设又出现了一个前所未有的大好发展机遇：十六届四中全会提出构建社会主义和谐社会，明确提出要加强精神文明建设，增加对文化事业的投入。为此，公共图书馆，特别是中西部欠发达地区的图书馆应紧紧抓住国家对贫困地区文化事业的政策倾向和国家对公共图书馆进行评估定级的契机，以建设现代化图书馆为方向，利用一切可利用的条件，积极争取政府在资金、政策上的支持，加强基础建设，确保本地区图书馆事业建设的健康发展。是什么意思？

Into the 21st century knowledge economy era, the construction of libraries in China an unprecedented excellent opportunities for development: the Fourth Plenary Session of the Sixteenth CPC Central Committee proposed to build a socialist harmonious society, explicitly proposed to strengthen the buil

In the 21st century an era of a knowledge-based economy, My Library construction, the emergence of a unprecedented excellent development opportunities: 16 sessions in 4 Plenary Session proposal to build a harmonious society, and made it