例句與造句

1. using self-assembly to produce three-dimensional photonic crystals is the more feasible method . but making perfect crystalline arrays of sphere is not easy . invariably, random ( bad ) defects occur within the lattice
   制備三維光子晶體的方法中，自組織法是最有實際意義、應用最廣泛的方法，但是此方法難于控制晶體的生長過程，所制備的膠體晶體通常呈多晶結構。
2. It's difficult to find array of spheres in a sentence. 用array of spheres造句挺難的