彼は十八歳で離郷し、東京の大学に進んだ。
He left his hometown at eighteen and went on to a university in Tokyo.
高度成長期には多くの若者が職を求めて離郷した。
During the period of rapid economic growth, many young people left their hometowns in search of work.
離郷から三十年が過ぎ、ようやく故郷に戻ってきた。
Thirty years after leaving home, he finally returned to his hometown.