柏林

Based on our measurements, the optical characteristics of hillocks are attributed to the Al concentration variation, but not contributed from transitions involving defect levels as suggested previously.

根据现有的量测结果，我们推论丘状结构所表现之特殊光学特性，很可能来自於铝组成的降低而非以前所推论的杂质态之贡献。

I quartered the sandwiches and put them on a tray.

我把三明治分成4份，然后放在盘子上。