不絕於途

不 = 丆 + 卜 : Bruno Bear (bu) is setting up a wind wheel (丆) with a voodoo staff (卜) in the space station's bathroom (Ø4). He also puts a "forbidden" sign (mnemonic symbol for 不) on it, to make clear that it may not (不) be stopped.

绝 = 纟 + 色 : Just inside the elevator's kitchen Zeus and the silk worm are playing a dice game. The game is called "annihilation", and the loser is said to become extinct within 1000 years' time. They don't know yet that both gods and worms will be extinct due to the human race soon.

于 = 亅 + 二 : Mnemonic symbol: prepositions (in, at, on, to, ...) are what glue the sentence together. Honey is as sticky as glue, so I'll represent 于 by a honey jar.

Yu the Great (于) was assigned to repair the electronics of the space station's kitchen (Ø2), but instead he was snacking honey from a honey jar (于). Unfortunately his capacitor (二) got stuck in the honey and now he has to use a crowbar (亅) to lever it out.

途 = 余 + 辶 : Just inside the entrance of the space station (Ø2), Tommy Turtle (tu) is contemplating two different ways (途) to get back to earth. There is a sedan chair (余) but no one to carry it on the one hand, and there is a pair of worn gladiator sandals (辶) on the other hand.