井
=
二
+
丿
+
丨
:
Joan of Arc (ji) is digging a well (井) inside the engine ((e)ng3). At first she was doing it by hand, but then she hooked up a capacitor (二) to a banana (丿) and a dinosaur bone (丨), which dig for her using the electrical energy.
vertical stroke (in Chinese characters), referred to as 豎筆|竖笔[shu4 bi3]
Mnemonic symbol: a dinosaur bone. Sheldon Shrimp (shu) found a gorgeous dinosaur bone (丨) in the space station's bathroom (Ø4) and is cracking it open to eat its bone marrow.
二
=
一
:
Mnemonic symbol: a capacitor, because the two strokes remind me of the symbol in electrical drawings. Albert Einstein (Ø) is experimenting with a capacitor (二) in the space station's bathroom (Ø4). He finds that it's uncomfortable to discharge a capacitor using two flutes (一).
耕
=
井
+
耒
:
Guy Fawkes (g) is plowing (耕) the snow in front of the engine ((e)ng1) with a snow plow (耒). Specifically he is creating paths between the various wells (井) which serve as secret entrances to his underground network.