At the same time the us has been flexing its diplomatic muscle .
与此同时，美国一直在展示自己的外交力量。
Constant flexing of the structure concentrates stress , which leads to microscopic cracks .
这些构造部位的频繁伸缩使应力集中，导致微裂纹的产生。
Regular flexing and exercise of fingers and wrists are essential .
一定要经常地弯曲、活动手指和手腕。
Facebook is really flexing its muscles today .
facebook又要大展拳脚了。
Democratic leaders are already flexing their muscles on financial regulation and one of his first tasks will be to choose the new treasury secretary to implement reform .
