liǎng / jiā / gōng / sī / cháng / qī / hé / zuò / zǎo / yǐ / xíng / chéng / xiū / qī / xiāng / guān / de / guān / xì

两家公司长期合作，早已形成休戚相关的关系。

The two companies have worked together for a long time and have long been closely connected.