Please estop your continual questions.

请不要再接二连三地提问题了。

Please estop talking.

请停止讲话。

Please estop making excuses. I know the score and I know you are to blame.

别找借口了，我知道是怎么回事，我也知道这件事应该怪你。

That is, he might be able to prevent, or "estop," you from using that argument as a defense, because of his reliance on your actions.

也就是说，他也许能“禁止(你)翻供”，或防止你利用这场争端作为防卫，由于他对你行为的依赖。