2 sentences for 联络 (lián​luò — connection)

1. 我们毕业后就断了联络。

   wǒ​men bì​yè hòu jiù duàn le lián​luò.

   We lost touch after graduating.

   Source: OpenSubtitles

2. 我们通过邮件和老客户保持着紧密的联络。

   wǒ​men tōng​guò yóu​jiàn hé lǎo kè​hù bǎo​chí zhe jǐn​mì de lián​luò.

   We maintain close contact with our long-standing clients via email.

   Source: Dong Chinese Dictionary