支柱产业

支 = 十 + 又 : Mnemonic symbol: a tree branch. James II of England (zh) has to repair the hull of the space station. His tool is a big cross (十) with one end cushioned with a boxing glove (又), which he is to use as a hammer. As he is floating in front of the space station (Ø1), the only tool to support him is a wooden branch (支) so that he won't float away.

柱 = 主 + 木 : It is Christmas in the space station and Julian Giant Squid (zhu) set up a Christmas tree (木) in the bathroom (Ø4). Julian Giant Squid prepared a gift for the lord (主): he gives him a pillar (柱) for his mansion.

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.