基本解释

◎ 走内线 zǒu nèixiàn
[go through private channels;take the inner line;seek sb's favour by approaching his family members or confidents] 指通过对方眷属进行某种活动,有贬义
他这件事是通过走内线活动成功的

英文翻译

1.use private influence to achieve one's end