If the downgrade shatters his credibility with voters , that is an unforced political error .
如果评级下调导致他在选民中威信扫地,那么这种政治失误并非被迫使然。
Then something - a pebble , a raindrop - breaks the surface and shatters the mirror .
接着,一些事情,一个鹅卵石,一滴雨滴,打破了湖面。
This blow , alone , would bring any economy to its knees , and shatters the silly contention that the great depression was a consequence of economic freedom .