温室是北方冬季蔬菜生产的主要设施。
The greenhouse is the main facility for growing vegetables in winter in North China.
夏季蔬菜生产过旺，冬季蔬菜生产过淡。
In summer the vegetable production is excessive; in the winter the vegetable production is deficient.
例如，在我省冬季蔬菜品种的原植物是很单调，主要是白菜和萝卜。
For example, the original plant in our province varieties of winter vegetables is very monotonous, mainly to Chinese cabbage and radish.
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