Vertical farming will work only if it makes use of natural light, Dr Caplow concludes.
Caplow博士的结论是：只有利用自然光，垂直农场才行得通。
2
Operating all year round, the barge could grow 20 times more than could have been produced by a field of the same size, says Dr Caplow.
常年经营的驳船所产出的作物是同样面积土地所产的20倍。
3
"It was to investigate what we could do to grow food in the heart of the city with minimal resource-consumption and maximum resource-efficiency," says Dr Caplow.