And there are also some societal reasons why we might want people to understand what it is that's happening in photosynthesis. For example, one half of the carbon equation is how much we emit, and the other half of the carbon equation, as I'm very conscious as a trustee of Kew, is how much things soak up, and they soak up carbon dioxide out of the atmosphere.
其中也有一些社会因素 让我们想使大众了解光合作用如何运作 例如，有一半的碳储量是人类排放的 而另一半碳储量 我相当关切，身为皇家植物园的受托管理人 是植物吸收多少二氧化碳