Reports in recent months have shown sluggish economic growth .

近几个月来的多份经济报告均显示美国经济增长停滞不前。

Study after study has shown this to be true .

多项研究表明了这个结论的真实性。

Both north korea and south korea have shown signs of concession in recent years .

在最近几年朝鲜和韩国都表现出了让步的迹象。

Samsung electronics of south korea has also shown a 3-d prototype .

韩国的三星电子也展示了一个三维技术样品。

Researchers have shown that hormones directly affect brain chemistry that controls emotions and mood .

研究人员已证明荷尔蒙直接影响控制情绪和心情的大脑化学变化。