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"Inspection of the Natural Waters in My Hometown" Environment and our PPT courseware
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2023-10-05 09:47:11
"Chemistry and Environmental Protection" Chemistry and Social Development PPT download
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Elegant green environmental protection low carbon life PPT template download
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"The Relationship between Organisms and the Environment" Understanding the Biosphere PPT Courseware 2
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"Observing the Growth of Mung Bean Sprouts" Biology and Environment PPT Courseware 3
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"Observing the Growth of Mung Bean Sprouts" Biology and Environment PPT Courseware 4
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"How do we distinguish sounds (continued)" Sound and environment PPT courseware
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"How We Hear Sound" Sound and Environment PPT Courseware 2
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"Seed Germination Experiment (2)" Biology and Environment PPT Teaching Courseware
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"Biosphere and Vegetation" Looking at the surface environment from the earth's sphere PPT
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Ring chart cone chart column chart of business PPT chart collection
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Green flat environmental protection PPT template with leaf background
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2019-01-28 16:00:00
"Hydosphere and Water Cycle" Looking at the Surface Environment from the Earth's Sphere PPT (Lesson 2)
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"Investigating Creatures in the Surrounding Environment" Understanding Biology PPT Courseware 6
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"Earth's Cosmic Environment" Earth in the Universe PPT teaching courseware
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"Inspection of the Natural Waters in My Hometown" Environment and Us PPT Courseware 2
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2023-09-25 18:15:21
"Towards Man-Earth Coordination - Sustainable Development" Environment and Development PPT Download
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2023-09-20 15:11:43
Blue clean energy photovoltaic solar energy environmental protection power generation PPT template
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Environmental protection PPT template with love holding up the green earth background
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2019-02-01 07:00:00
PPT histogram chart download composed of 3d three-dimensional transparent rings
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2019-03-06 14:00:00
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