lì shǐ / shàng / Běi ài ěr lán / yǔ / ài ěr lán / gòng hé guó / yǒu zhe / fù zá / de / guān xì历史上,北爱尔兰与爱尔兰共和国有着复杂的关系。Historically, Northern Ireland has had a complex relationship with the Republic of Ireland.