Highly symmetrical bodies in animals might signal quality genes, and better offspring.

动物界存在的高度对称的体型可能代表着高质量的基因、以及更好的后代。

As the signal quality or bandwidth get worse, compression algorithms remove more data, further reducing precision, which is why Skype calls sometimes sound like robots talking.

随着信号质量或带宽变差， 压缩算法会删除更多数据， 进一步降低精度，这就是为什么 Skype 通话有时听起来像机器人说话的原因。