We observe a striking shift away from a labor theory among all mainline economists.我们发现在主流经济学家中间出现了一种偏离劳动理论的显著变化。The topography of the river's basin has changed significantly since the floods.洪水过后，这条河流经区域的地貌发生了显著变化。Opponents say their polling indicates a significant change in attitude.反对派称他们的民调显示人们的态度发生了显著变化。