YOU SAID:
I've been working on the railroad, all the live long day
INTO JAPANESE
私は鉄道で働いてきました
BACK INTO ENGLISH
I have been working on the railway
INTO JAPANESE
私は鉄道に取り組んでいます
BACK INTO ENGLISH
I am working on railway
INTO JAPANESE
私は鉄道に取り組んでいます
BACK INTO ENGLISH
I am working on railway
You've done this before, haven't you.