叹
=
又
+
口
:
Tecumseh (t) is loosing a battle in the anthill's bathroom (an4). With each hit of his opponent's boxing glove (又) on his mouth (口) he gives a desperate sigh (叹).
惜
=
忄
+
昔
:
NASA ordered Marie Curie (xi) to do an experiment for them in front of the space station (Ø1). They are spending 2000000000 bucks to see what happens when you crush a milk shake (昔) with a flail (忄) in outer space. Marie Curie thinks it is a pity (惜) and would rather drink her cherished (惜) milk shake rather than crush it.