相对湿度

相 = 木 + 目 : Mnemonic symbol: I take "eye" and "tree" as resembling an ent, an alive tree. Xi Shi (xi) portrays (相) an ent (相) in the anglepod's bathroom (ang4). Unfortunately she's really bad at painting, and her portrait resembles more a Christmas tree (木). The Eye of Providence (目) enters and, just from the shape of the Christmas Tree, instantly recognizes its own portrait (相).

对 = 又 + 寸 : Doggy Dog is preparing for a boxing battle in the bathroom of the Eiffel Tower. He wears his boxing gloves and thumbs up to himself, reassuring himself that he'll knock out his opponent easily.

湿 = 显 + 氵 : Sherlock Holmes (sh) is investigating a wet (湿) puddle next to an empty water bottle (氵) in front of the space station (Ø1). Although it is very obvious what happened through the conspicuous (显) empty water bottle, Sherlock still has to think hard about it.

度 = 又 + 广 + 廿 : Mnemonic symbol: a thermometer.

度 = 又 + 广 + 廿 : Doggy Dog follows a rigid training plan in the space station's bathroom to spend his time, even though he is sick and has a fever. To measure the degree of intensity of his fever, he uses a thermometer to measure his temperature. Even while doing this he still boxes a flower pot (which he suspended from a parachute) with his boxing glove.