You are caught in between something, or between two opposing forces, or points of view

错了。我在学习英语。 Learning English!

我不知道！我在学习中文，叔叔你要学习中文吗？我们可以来交流中文！ Chinese!

if you are stuck , it means you aren't able to move i'm stuck in the middle: for example if you are in the elevator and it stopped suddenly between the third and fourth floor, now you are stuck as you can't get out. if you are driving your car and suddenly there was an accident in front of you and a car behind you, now you are stuck in the middle and you can't move your car