"about math, research papers, science"

"Black and white ghost"

"一只蜜蜂睡在花朵上"

"海盗船长和他的鹦鹉"

"Wizard with a staff of shadows"

"Alien with a hovering disk"

"Space shuttle launch"

"Viking warrior with an axe"

"Alien with multiple eyes"

"Ghostly apparition"

"Enchanted forest with glowing lights"