She once allowed me into her inner sanctum.

有一次她让我进入她的内室。

《牛津词典》

Projects usually begin by identifying a stream that once allowed salmon to spawn.

项目通常首先从确定一条让鲑鱼产过卵的河流开始。

youdao

Very possibly she knew that if my vanity was once allowed to get the upper hand it would be difficult afterwards to bring it under control.

她很可能知道如果我的虚荣心一旦站了上风，那么日后就会像脱缰之马，难以驾驭。

youdao

Once he follows through on constitutional changes approved by the referendum, he will be allowed to run for another three-year term and run again after that if he likes.

VOA: standard.2009.08.14

Ranchers who had once allowed scientists to explore their land for free began leasing it to the highest bidder.

NEWYORKER: Bones of Contention

It was remembered that, as a minister, he once allowed a woman singer to perform in public (even though it was to a female audience only, the Islamic Republic bans any woman singing solo).

ECONOMIST: Islam and the ballot box | The

The main driver was the falling cost of launching communications satellites: the technology that had once allowed the Soviet Union and America to spy on each other became an inexpensive way to transmit television signals.

ECONOMIST: A world view | The