汽
=
气
+
氵
:
The Queen of Hearts (qi) conducts an experiment in the space station's bathroom (Ø4). She attached an empty balloon (气) to a water bottle (氵) and uses a lighter to make the water boil. Subsequently the water becomes water vapor (汽) and fills the balloon, enabling the queen to estimate the vapor volume.
wheel / disk / ring / steamship / to take turns / to rotate / by turn / classifier for big round objects: disk, or recurring events: round, turn
轮
=
仑
+
车
:
Lenny Lemur (lu) is driving his cabriolet (车) through the encampment's kitchen ((e)n2). It is very hard to drive there because all the blackcurrant berries (仑) get stuck in the wheels (轮).
机
=
几
+
木
:
Joan of Arc (ji) made a machine (机) that fully automatically manufactures tables (几) out of Christmas trees (木) and tests it in front of the space station (Ø1).