现在玻璃和压克力(塑料)覆盖物都经常使用。

Glass and acrylic (plastic) covers are both used today.

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棉布可以防止太阳把洋葱完全晒干。不要担心下雨，不要使用塑料或帆布覆盖。严实覆盖物可以锁住水分防止洋葱完全晒干。

And do not use a plastic or canvas sheet. Heavy coverings will trap moisture and keep the Onions from drying fully.

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棉布可以防止太阳把洋葱完全晒干。不要担心下雨，不要使用塑料或帆布覆盖。严实覆盖物可以锁住水分防止洋葱完全晒干。

And do not use a plastic or canvas sheet. Heavy coverings will trap moisture and keep the Onions from drying fully.

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