pull strings
US /pʊl strɪŋz/
UK /pʊl strɪŋz/

1.
走後門, 利用關係
to use one's influence with others to gain an advantage or special favor
:
•
He had to pull strings to get his son into that exclusive school.
他不得不走後門才讓兒子進了那所貴族學校。
•
She's good at pulling strings to get what she wants.
她很擅長走後門來達到目的。