我们必须采取行动来阻止这场冲突。

We must take action to ___stop the conflict.

如果她真的想去，我不知道是什么在阻止她。

If she really wants to go, I don't know what is ___stopping her.

父亲介入是为了阻止孩子们为看电视争吵。

The father intervened to ___stop the children from arguing over the TV.