The key ingredient is handmade straw bales.

其重要的原料是手工制成的秸杆捆。

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He says straw bales can require less water, and prevent plant diseases caused by too much water in soil.

他说禾捆需要的水不多，能预防土壤中水分过分引起的植物疾病。

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The walls are made of tightly packed straw bales held together with bamboo pins and covered with fishing nets.

墙壁是一块块密实的草捆，用竹针结合在一起，上面盖着渔网。

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(talking) But after doing his own research, he learned that building with straw bales makes a lot of sense.

VOA: special.2009.10.05

Now there is new evidence to suggest that houses built with bales of straw can be very strong.

VOA: special.2009.10.05

To build the houses, he fills a wood frame with tightly packed bales of straw.

VOA: special.2009.10.05

If you're building a house from scratch, consider insulating it with straw bales or even denim.

FORBES: Magazine Article

Two days later Mitch and I were jumping straw bales, without any reins or stirrups, when I fell off and hit my head so hard I knocked myself out.

WSJ: A Horse-Crazy Girl's Separation Vacation

At the time of his dental work, Walker was still small and light enough to be operated on an improvised table made from planks of wood laid on straw bales.

BBC: How do you give a polar bear a 'medical'?