YOU SAID:
it's hard to make a donkey cross a bridge
INTO JAPANESE
ロバが橋を渡るのは難しい
BACK INTO ENGLISH
Donkey is difficult to cross the bridge
INTO JAPANESE
ロバは橋を渡るのが難しい
BACK INTO ENGLISH
Donkey is difficult to cross the bridge
You've done this before, haven't you.