They are on friendly terms with the boss.

他们与老板的关系融洽.

《简明英汉词典》

Our two families have been on friendly terms for generations.

我们两家世代都有通家之好.

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And naturally this put them on friendly terms with us.

这自然使他们和我们的关系很友好.

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They are on friendly terms.

他们俩很要好.

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