gatekeeper

音标发音

She blandished the gatekeeper into letting her through the gate of the theatre.
她用甜言蜜语哄得看门人让她进了戏院的门。
The joy of a decentralised network is that no party acts as a gatekeeper for any other.
分散式网络的好处在于任何一方都能当作是相对于其余各方的看门人。
THE Science Museum has never set itself up as a gatekeeper, deciding what is science and what is not.
科学博物馆从来没有把自己设定为一个决定什么是科学而什么不是科学的看门人。

Alan Bersin worked at the Justice Department in the 1990s and led a government crackdown on illegal immigrants at the California-Mexico border, known as Operation Gatekeeper.
And some consider the White House Chief of Staff as co-president, although I think Joshua disagrees with that, or the president's gatekeeper, that is, I think he agrees.
一些人认为,办公厅主任可以和总统平起平坐，虽然我认为约书亚不同意此观点，还有人说是总统的看门人，我认为这种说法他会同意。
普林斯顿公开课 - 国际座谈会课程节选
Let's look at how you work as the president's gatekeeper.
现在我们来看看,作为总统的主管你是怎么工作的。
普林斯顿公开课 - 国际座谈会课程节选

Because they can afford to pay the gatekeeper a hefty fee for recommending the product.
FORBES: International Campaign to Eliminate Pension Consultant Abuses (November 2, 2004 )

a person whose job is to open and close a gate and to prevent people entering without permission

A gatekeeper is a person who is in charge of a gate and who allows people through it.