4 sentences

1. 咱们俩可是几十年的交情。

   zán​men liǎ kě​shì jǐ​shí nián de jiāo​qing.

   We've been friends for decades.

   Source: OpenSubtitles

2. 你们两位交情还真是好呢。

   nǐ​men liǎng wèi jiāo​qing hái zhēn shì hǎo ne.

   The two of you really have a good relationship.

   Source: OpenSubtitles

3. 看在多年交情的份上，你就帮他这一次吧。

   kàn zài duō nián jiāo​qing de fèn shàng, nǐ jiù bāng tā zhè yī cì ba.

   For the sake of our years of friendship, please help him this one time.

   Source: Dong Chinese Dictionary

4. 念在早日的交情上，他决定伸手帮老朋友一把。

   niàn zài zǎo​rì de jiāo​qing shàng, tā jué​dìng shēn​shǒu bāng lǎo​péng​you yī bǎ.

   For the sake of their past friendship, he decided to lend his old friend a hand.

   Source: Dong Chinese Dictionary