2 sentences

1. 他在政坛打拼多年，积累了丰富的人脉。

   tā zài zhèng​tán dǎ​pīn duō nián, jī​lěi le fēng​fù de rén​mài.

   Having worked in politics for many years, he has built an extensive network.

   Source: Dong Chinese Dictionary

2. 他在新闻界工作了二十年，积累了丰富的人脉。

   tā zài xīn​wén​jiè gōng​zuò le èr​shí nián, jī​lěi le fēng​fù de rén​mài.

   He has worked in journalism for twenty years and has built an extensive network.

   Source: Dong Chinese Dictionary