Liǎngdì zhījiān de jùlí ràng tāmen de guānxi biàn de hěn nán wéichí.
The distance between the two places made their relationship very difficult to maintain.
Tips
usage
两地分居 (liǎngdì fēnjū) — living apart in two places — is a very common phrase describing long-distance couples or families separated by work assignments.