空运

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.

运 = 云 + 辶 : Yu the Great (yu) is practicing step dancing in the encampment's bathroom ((e)n4). She is wearing gladiator sandals (辶) and is moving (运) so fast that she's evaporating the floor. There are even clouds (云) of smoke coming from her gladiator sandals and the evaporated floor.