对于系统,翻版的模拟是在控制图中添加一个创建循环的边,而不仅仅是一个附加节点。
I think that the most important thing in art is to provoke thought, not to provide entertainment.
Leadership means making tough decisions today that will benefit future generations.
真正的林业领导力意味着在经济增长和生态管理之间取得平衡。
Diversity in science leads to richer perspectives and better solutions.