扑空

扑 = 卜 + 扌 : Petra penguin (p-) flaps about outside the space station's entrance (Ø1) in an attempt to throw herself at the bone with feather attached (卜). However, Penelope poodle (-u1 sound) is quicker to the prize and pounces on the bone first using her toy claw (扌). It's hard to imagine why someone would devote one's energies (扑) towards such fruitless activities. Who could forecast (卜) what would happen next?

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.