释义：
fat本义是“油腻的”，引申为“富裕的，茂盛的”，而city是泛指“地方，地域”。fat city原意是“极为舒适的生活环境，富裕”，后引申为“舒适成功的条件”。
Eg.
You can tell that thatguyis in fat city .
看得出那个男孩生活富裕。
You can tell by their car that they are in fat city.
看他们的车你就能知道他们生活富裕。
We used to live a dog’s life, but now we are in fat city.
那时我们过着猪狗不如的生活，如今大家都富裕起来了。
She gathered up the gold coins, carried them away and was in fat city for the rest of her life.
她拾起金币带走，从此她一生都过着非常富裕的生活。