bitter / hardship / pain / to suffer / to bring suffering to / painstakingly
苦
=
艹
+
古
:
Karl Koala decided to repent for his sins and retreated into a cloister inside the space station. There he leads a very simple life full of hardship, e.g. he gave up on eucalyptus and just eats very bitter artificial lawn.
to practice / to train / to drill / to perfect (one's skill) / exercise / (literary) white silk / to boil and scour raw silk
练
=
纟
+
一
+
东
:
Li Qingzhao (li) and the silk worm (纟) are working out (练) in the anthill's bathroom (an4). They set up an Oriental Pearl Tower (东) to which they attached a huge flute (一) as horizontal beam, so that they can practice (练) pull-ups.