大量的无序移民、融合问题、以及“人才流失”问题遮盖了移民对经济增长、全球化和文化多样化作出的贡献。
High levels of irregular migration, problems of integration, and the issue of "brain drain" mask migrants' contributions to economic growth, globalization, and cultural diversity.
丰富多彩的、多样化的文化生活对于这对夫妇而言是必不可少的。
A rich and varied cultural life is essential for this couple.
我们的物种起源于大约20万年前，并经历了13万年的惊人的多样化进程，包括文化、技术、语言和艺术等方面。
Our species originated around 200,000 years ago, and underwent tremendous diversification, culturally, technologically, linguistically, artistically, for 130,000 years.
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