当水从板下的一个腔中被抽出来产生负压时，可伸缩的传感器被向下拉，形成一个凹形。
When water is pumped out of a chamber below the plate creating negative pressure, the stretchable sensors are pulled down, producing a concave shape.
当汽车进入高速公路系统时，一只可伸缩的手臂将从汽车上落下，与轨道接触，这类似于为地铁列车供电的轨道。
When the auto enters the highway system, a retractable arm will drop from the auto and make contact with a rail, which is similar to those powering subway trains electrically.
云计算和网格计算都是可伸缩的。
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