YOU SAID:
He's had some trying years
INTO JAPANESE
彼は何年か挑戦してきた
BACK INTO ENGLISH
He has been challenging for several years
INTO JAPANESE
彼は数年間挑戦してきました
BACK INTO ENGLISH
He has challenged for several years
INTO JAPANESE
彼は数年間挑戦してきました
BACK INTO ENGLISH
He has challenged for several years
That didn't even make that much sense in English.
