界
=
介
+
田
:
Joan of Arc wants to leave this world and sets up a rocket launch field in the elevator's bathroom. The field looks like a normal crop field, except that there's a rocket in the middle and that the Joan of Arc marked the boundary with white and red tape.
to introduce / to lie between / between / shell / armor
介
=
人
+
丿
+
丨
:
Mnemonic symbol: 介 looks like a rocket 🚀. Neanderthal Man (人) and Joan of Arc (ji) are preparing a rocket (介) for its start. Between (介) the layers of the outer shell (介) they are stuffing bananas (丿) and dinosaur bones (丨).
田
=
囗
+
十
:
Mother Teresa (ti) wants to plant a field (田) of crosses (十) in the anthill's kitchen (an2). She ordered an enclosure (囗) full of crosses (十) and puts them up one by one.
(Buddhism) to designate the boundaries of a sacred place within which monks are to be trained; a place so designated / (fantasy fiction) force field; invisible barrier (orthographic borrowing from Japanese 結界 "kekkai")