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.
forehead / horizontal tablet or inscribed board / specified number or amount
额
=
客
+
页
:
Albert Einstein (Ø) and his guest (客) are playing a game of 20 questions just inside the elevator's kitchen (e2). They both have sheets of paper (页) fixed to their foreheads (额) with a name on each to guess.