translation.en: These were the structures that would be floating at the surface made out of some inexpensive plastic material that'll allow the algae to grow, and we had built lots and lots of designs, most of which were horrible failures, and when we finally got to a design that worked, at about 30 gallons, we scaled it up to 450 gallons in San Francisco.
translation.zh: 这些光生物反应器可以漂浮在 由廉价的塑料材料覆盖的水面上， 这些塑料材料可以让藻类生长，我们进行了 许多次的设计，但大部分都失败了， 当我们的设计最终成功时 我们用的只是30加仑的容器，在旧金山， 我们按比例增加到了450加仑。