A boy feeds the cane stalks into the gears of the mill, and the cloudy sweet juice bursts through a spout and into a barrel.

一个男孩将甘蔗杆喂入磨坊的齿轮中，浑浊的甜汁从喷嘴中喷出，进入桶中。

And, although Christmas trees are only available seasonally, she says the same techniques could be used year-round on other agricultural waste, like corn cobs and sugar cane stalks.

而且，虽然圣诞树只在季节性供应，但她说同样的技术可以全年用于其他农业废弃物， 如玉米芯和甘蔗杆。