There is no cast-iron [fixed] rule.

没有一成不变的规则。

《新英汉大辞典》

The company has so far released no details about the cast or production schedule.

到目前为止，这家公司还没有公布有关演员阵容和拍摄时间的任何细节。

youdao

In some districts no votes were cast at all.

在一些地方甚至没有一个人投票。

youdao

He says,even if losses are taken into account, no one can now cast doubt on those who organized and led the victory.

VOA: standard.2009.12.25

You just can't just cast it away, and say it's no big deal. But because it is a deal.

总不能置之不理，想着反正天也不会塌下来，那你就错了。

斯坦福公开课 - 经济学课程节选

The open-cast Chuncheng No. 2 mine near their village, along with dozens of other mines in Xilin Gol, was ordered to close, at least temporarily.

ECONOMIST: Inner Mongolia

The story has a wryly sardonic cast: there are no heroes.

NEWYORKER: Control Yourself

Eight feet tall and twenty-four feet long, the specimen had been mounted in a predatory running position, with its arms out and its jaws open, as if determined to eat Lot No. 49220 a cast Komodo dragon, crouching ten yards away, on blue velvet.

NEWYORKER: Bones of Contention