Eg. switching between these states allows grier to move objects back and forth .
格里尔通过转换这些状态来实现向前和向后移动物体。
Then if you have to divert from your original plan and wing it , you 're in a better position to go forth creatively and boldly .
如果你不得不偏离你的原始计划并改变它，你就会在一个较好位置上创造地和大胆地向前走了。
Recalling the dark days of the war of independence , he pledged , like george washington , that in the face of common danger americans under his leadership would come forth to meet it .
