Usages of kruro
Post longa tago de laboro, mia brako kaj mia kruro doloras.
After a long day of work, my arm and my leg hurt.
Promeninte longe, ŝi sentas doloron en unu kruro.
Having walked for a long time, she feels pain in one leg.
Elon.io is an online learning platform
We have an entire course teaching Esperanto grammar and vocabulary.