不可挽回

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.

可 = 丁 + 口 : Karl Marx (k) is challenging his abilities (可) in the elevator's living room (e3). He tries to force a nail (丁) into a mandarin (口), just by using his head. On top of that he tries to do so one thousand times, in order to create a bed of nails (mnemonic symbol for 可).

可 = 丁 + 口 : Alternative mnemonic symbol: kebab, from the pronunciation "ke". Karl Marx (k) is preparing a kebab (mnemonic symbol for 可) in the elevator's living room (e3). He also skewers mandarins (口) on the long steel nails (丁) and will only allow (可) his guests to eat the rest of the kebab if they eat their mandarins first.

挽 = 免 + 扌 : Willy Walrus (w) is drunkenly lamenting the dead (挽) in the anthill (an3) who died of alcohol poisoning, while the bar keeper is waving with a toy claw (扌) holding the bar's disclaimer (免). Finally Willy Walrus recovers (挽), the bar keeper rolls up (挽) the disclaimer and both return to their usual business.

挽 = 免 + 扌 : Willy Walrus (w) is drunkenly lamenting the dead (挽) in the anthill (an3) who died of alcohol poisoning, while the bar keeper is waving with a toy claw (扌) holding the bar's disclaimer (免). Finally Willy Walrus recovers (挽), the bar keeper rolls up (挽) the disclaimer and both return to their usual business.

回 = 口 + 囗 : Helga Horse (hu-) smuggled herself into the Eiffel Tower's kitchen (-ei2). She covered herself in an enclosure (囗) full of mandarins (口). Unfortunately, she missed one little detail: The box full of mandarins is to be shipped back (回) to China soon.