After food enters the stomach from the esophagus, the muscle’s task is to stop it from surging back up again.
食物从食道进入胃后,肌肉的任务是阻止食物再次回流。
PBS英语讯息
So, given that the Europeans are surging back up, that that is very clear that this is a risk that we will be doing the same thing if we don't pull back.