zhè / liǎng / gè / bù / mén / cháng / qī / shuǐ / huǒ / bù / róng / hé / zuò / qǐ / lái / fēi / cháng / kùn / nán

这两个部门长期水火不容，合作起来非常困难。

These two departments have been completely incompatible for a long time, making cooperation very difficult.