it is found in the air all around us and over 50% of the oxyenn
蒸发,挥发(常见词)ingenuity n.聪明才智synthesis v.
what is photosynthesis? - 林间星光 - 透过森林的星光
what is photosynthesis? - 林间星光 - 透过森林的星光
summer is a grand photosynthesis,we will meet the sun, rain
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