空中飄浮

空 = 工 + 穴 : Mnemonic symbol: an air conditioner

空 = 工 + 穴 : In front of the engine, Karl Koala found some very special cave paintings. Using steel beams he constructs a protective cover. He also installs air conditioning to make the best environment possible to preserve the cave paintings.

中 = 丨 + 口 : Mnemonic symbol: a dart board, because you always try to hit the center.

Julian Giant Squid (zhu-) is throwing dinosaur bones (丨) as darts on a dart board in front of the engine ((e)ng1). To make it a bit more difficult he's throwing mandarins (口) into the air as well and skewers them up right in the center (中 is a mandarin skewered on a dinosaur bone) in mid flight with the dinosaur bones. He's still able to consistently hit the center (中) of the dart board.

飘 = 票 + 风 : The aorta has become a world heritage site and now one has to purchase a very expensive ticket (票) to enter. Pocahontas (pi) got a ticket, and in front of the aorta (ao1) she's looking for it, but she cannot find it. It is because the wind (风) blew it away, and now it is floating (飘) on the water of a puddle right next to her.

浮 = 孚 + 氵 : Ever since Frieda Fox (fu) got her wedding ring (孚) just inside the space station's entrance (Ø2) she's been floating around (浮) like on clouds. She even got drunk by only drinking a bottle of water (氵).