| 1 | pairs of balls stacked two by two in alternating directions is another. | |
| 2 | With distributed computing the industry became a stack of horizontal layers. | |
| 3 | Researchers say the calls become layered atop one another, almost like a duet. | |
| 4 | Web pages have also become more expressive with the introduction of CSS (Cascading Style Sheets). | |
| 5 | From softly cascading ruffles to frills of layers at the hem, you'll bring out your girlie best in ruffles. |