另外，光源代表虚拟温室外的天空。

Additionally, a light source imitating the sky has been placed outside the virtual greenhouse.

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因此，为创造一个虚拟玫瑰模型，需要预知温室气候，主要是光照和温度。

Therefore, in order to create a virtual rose model, we need to predict greenhouse climate, mainly light and temperature.

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