美 [ˈkrʌmbl tu dʌst]
破碎成尘：指物体因老化、腐烂或摧毁而破碎成小块并最终变成尘土。
化为乌有；垮掉
To crumble to dust; disintegrate.
弄碎分解成粉末；
Though empires crumble to dust, and centuries are lost in shadows, the white marble still sighs to the stars, "I remember."
尽管帝国皇权已经化为齑粉，历史已经湮没无闻，而那白色的大理石却依然向满天的繁星叹息说：“我记得！”
We keep it in a climate-controlled case and we hardly ever move it, because with any sudden shock it could just crumble to dust.
我们一直把它保存在严格控制气候变化的展示台里，几乎不曾移动过；因为任何突然震动都可能使它瞬间崩溃，化为一地尘埃。
Indeed, the possibility that they might crumble to dust seems to be less of a concern than how nations will cope with the rise of so-called "megacities, " cities with populations of more than 10 million.