at the helm of
US /æt ðə hɛlm əv/
UK /æt ðə hɛlm əv/

1.
掌管, 领导
in charge of an organization or activity
:
•
She has been at the helm of the company for five years.
她已经掌管公司五年了。
•
The new CEO is now at the helm of the struggling startup.
新任首席执行官现在掌管着这家苦苦挣扎的初创公司。