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On a hazy green background, there is a string of lush creepers on the right as an embellishment. This PPT background picture is suitable for making PPT courseware related to plants, biology, and language;
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Domineering exposed ancient army background military slide template ...
Chinese tea culture has a long history, a wide variety of tea. Tea i...
This is an interior design as a slide template cover, stylish home P...
China Unicom Enterprise unified PPT template download
Doctor stethoscope background medical medical slide template downloa...
This is a copy of the changes on the mode of transport and layout of...