long-standing

長年の伝統

a custom or belief that has been part of a culture or group for a long time

長く続いてきた伝統。

長年の問題

a difficult issue that has existed for a considerable time

かなり長い間存在している難しい問題

someone who has been a friend for a long time

長年の約束

a promise or firm decision to do something that was made a long time ago

ずっと前にされた何かをするという約束や固い決意

長年の対立

a conflict that has continued for a long time

長い間続いている対立

長年の評判

the opinion that people have about someone or something, based on what has happened in the past over a long period

a disagreement or argument that has lasted a long time

長年の慣行

a way of doing something that has been the usual way for a long time

長い間通常の方法であったやり方

an angry and bitter argument between two people or groups that has continued for a long time