Our door knocker is cast in solid brass.

我们的门环是纯铜铸造的。

The play is being cast in both the US and Britain.

目前正在英美两国挑选这部戏的演员。

He is cast in a different mould from his predecessor.

他和他的前任性格不一样。

He is merely throwing the idea forward for discussion, it is not cast in stone.

他只是抛出个想法供讨论，不是固定不变的。

By this means she cast in a bone between the wife and husband.

她用这种手段离间这对夫妻。