thatch grass
浓密的草地
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The classrooms are built out of reeds and mud with grass thatch.
教室是由芦苇跟泥浆混合而成的，屋顶是用茅草盖的。
youdao
Back roofs are made from poplar and willow wood. Straw or water-resistant local grass is used for thatch to help minimise heat loss.
顶部用杨木和柳木搭出架子，苫上稻草或防水的当地野草来最大限度地减少热量损失。
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