When I held up samples of the rocks the plant was sitting on, they crumbled like sugar in my fingers.
我让大家看我在核电厂的采集的岩石样本,我用手指一捏,它们就像方糖块一样被捏碎了。
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Plant productivity is a measure of the rate of the photosynthesis process that green plants use to convert solar energy, carbon dioxide and water to sugar, oxygen and eventually plant tissue.