And dye-based cells, having no rigid parts, can bend, and are mechanically robust compared with the silicon sort.

而且染料型光电池全由非刚性材料构成，可弯可折，与硅型光电池相比其机械强度更高。

Nature often smoothly, glides, swims or wiggles, without the rattling of rigid parts or the loud rubbing of surfaces.

自然界的生物通常流畅地滑动、游动、摆动，没有硬质部件的响声，也没有表面之间的摩擦噪音。

For one thing, stretchy components would be safer to operate among people than the rigid parts of conventional robots.

一方面，弹性部件在人员之间操作时会比传统机器人的刚性部件更安全。