stepping stone

ponnahduslauta

askelkivi A stone that can be stepped on in crossing something, especially a marsh or creek.
puhekieltä Something used as a way to progress to something or somewhere else.
He was full of ambition, and force, and life, intend intending all sorts of great things, and meaning to make his position a stepping stone to all that was excellent in public life.
w:Esperanto Esperanto can make a good stepping stone language to w:Latin language|Latin, which may be difficult for amateur linguists.