1 not able to move 不能移动；动弹不得: This drawer's stuck. I can't open it at all. 这个抽屉卡住了，我根本打不开。We were stuck in traffic for over two hours. 我们陷于交通阻塞，有两个多小时无法动弹。

2 not able to continue with an exercise, etc because it is too difficult 难住了: If you get stuck, ask your teacher for help. 有困难就请教老师。