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A drop of water rippling ripples, fresh falling green leaves, and an elegant and refreshing blue background, suitable for ppt templates that advocate water conservation, energy conservation and environmental protection.
High-end black gold thesis defense ppt template, introduction, resea...
This is a set of blue simple style, book silhouette background gradu...
Geometric graphics creative cover and transition pages, business blu...
This is a set of wine culture PPT templates, a total of 26; Slide...
Nostalgic style, simple European and American art design, suitable f...
He Xinchun welcomes New Year ppt template, golden light, hollowed ou...