At the nearly barren 16-acre expanse at ground zero, four moments of silence observed the moments when jetliners crashed into the twin towers and the skyscrapers crumbled to the ground.

• 在土地的零几乎不育 16 个英亩的宽阔区域，当喷射客机撞上对地面被崩溃的双胞胎的塔和摩天楼的时候 , 沈默的四片刻观察了片刻。