A polytunnel is a similar structure but made using plastic instead of glass.
塑料大棚是一个类似的结构，但由塑料而非玻璃制成。
Polytunnel
原声例句
6 Minute English 六分钟英语
6 Minute English 六分钟英语
Production is decreasing despite improvements in how food is grown, especially the use of glasshouses and polytunnels.
尽管粮食种植方式有所改善，特别是温室和塑料大棚的使用，但粮食产量仍在下降。
6 Minute English 六分钟英语
And when you think about how much investment there has been in glasshouses and polytunnels since 1985 in a way that's transformed UK supply, quite frankly, the fact that this is what's being forecast is extraordinary.
想一想自1985年以来，有多少投资花在温室和塑料大棚上，这在某种程度上改变了英国的供应，坦白地说，人们预测出的事实非同寻常。
英语百科
Polytunnel
A polytunnel (also known as a polyhouse, hoop greenhouse or hoophouse, or high tunnel) is a tunnel made of polyethylene, usually semi-circular, square or elongated in shape. The interior heats up because incoming solar radiation from the sun warms plants, soil, and other things inside the building faster than heat can escape the structure. Air warmed by the heat from hot interior surfaces is retained in the building by the roof and wall. Temperature, humidity and ventilation can be controlled by equipment fixed in the polytunnel.
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