The true value of a tree isn't in its board feet, but in its roots and reach.
一棵树的真正价值不在于它的板材体积,而在于它的根系和影响。
你们必须掌握许多知识,让它们在你们的头脑里形成一个思维框架,在随后的日子里能自动地运用它们。
Innovation in mining technology is essential to meet the world's energy demands.