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This is two PPT background pictures of the demo whiteboard under two spotlights;
Keywords: brown wooden floor, gray brick wall, black spotlight PPT background picture, presentation whiteboard slide background picture
Petroleum extraction, PetroChina, exquisite universal ppt template s...
Safety experience sharing, winter driving risks and reduction measur...
Apple keyboard, Apple mouse, Samsung mobile phones, watches and othe...
Intertwined lines net, blue starry sky, glowing element design, exqu...
The sickness of thinking: The thinking is chaotic, the thinking depe...
What color is your parachute? For job seekers, this is a whole new w...