Funny how it works with white kids though. It's dope to be black until it's hard to be black.
实际发展水平与潜在发展水平之间的距离,前者由独立解决问题决定,后者由在成人指导下或与更有能力的同伴合作解决问题决定。
The future of forestry lies in balancing economic growth with ecological responsibility.