Plants are extremely efficient converters of light into energy, more or less setting the bar for researchers creating photovoltaic cells that convert sunlight into electricity.
植物是极其有效的光能转化器。这多多少少为太阳能光电电池的研发人员设定了标杆。
In the time of Qianlong, the vegetation in Chengde was extremely good, and pines reached high up to the sky, blotting out the sunlight.
乾隆时期承德植被极好，参天蔽日的树环绕避暑山庄。
In the time of Qianlong, the vegetation in Chengde was extremely good, and pines reached high up to the sky, blotting out the sunlight.
乾隆时期承德植被极好，参天蔽日的树环绕避暑山庄。
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