We needed strong, light, cheap materials that lasted a long time and plastics were perfect.

我们需要坚固、轻便、廉价、耐用的材料，而塑料就是完美的选择。

We have data and we have increasing amounts of dataas sensors have become smaller, lighter, cheaper and more powerful.

我们拥有数据，而且随着传感器变得更小、更轻、更便宜、更强大，我们的数据量也在不断增加。

Now, I notice you're using titanium. Did you give any consideration to carbon nanotubes? They're lighter, cheaper, and have twice the tensile strength.

我注意到你用的是钛金属，你有没有考虑过用碳纳米管，它们更轻更便宜，拉伸强度则是钛的两倍。

But it wasn't until the 100AD that a court official of the Han dynasty named Cai Lun came up with an improved recipe for paper that made it lighter, cheaper and more durable.

但直到公元100年，汉朝的一位名叫蔡伦的宫廷官员想出了一种改进的纸张配方，使其更轻、更便宜、更耐用。