第三产业

第 = ⺮ + 弓 + 丨 + 丿 : Dorothy Gale (di) accomplished an awesome result with her composite bow (弓) in the space station's bathroom (Ø4): She shot a banana (丿) onto a dinosaur bone (丨) so the banana was split in half, and then fired a bamboo stick (⺮) into the banana (丿) so the banana was split in half as well. Dorothy is number one (第) with the bow!

三 = 一 + 二 : Mnemonic symbol: a Cartesian coordinate system with three (三) axes.

Socrates (s-) is performing in front of the anthill (-an1). He created an electrical flute by attaching a large capacitor (二) to the flute (一), so that he can get the attention of all the ants. Moreover, he's balancing on a Cartesian coordinate system (三). Unfortunately, only three (三) ants stop to watch the performance.

产 = 厂 + 立 : Mnemonic symbol: an assembly belt. Can you see the vase soon falling off the assembly belt?

In anthill, Charlie Chaplin is setting up his assembly line. At the one end there is a supply of vases. In the middle of the assembly line, a chocolate factory fills chocolate into the vases. At the other end, the little vases with the chocolate are dumped into a large vase.

I can't help but see a bullfrog in 业. Maud Younger finds that the climate in the elevator's bathroom are perfect for her new business: growing bullfrogs.