我的一块椎间盘脱臼了，突然一阵疼痛使我动弹不得。

I had slipped a disc and was frozen in a spasm of pain.

《柯林斯英汉双解大词典》

“你知道自己干得什么好事？”他眼睛里冒着怒火，脸色还是死灰一般惨白。我动弹不得，还是站在那儿。

What the devil do you think you are doing? "His eyes flashed with anger. His face was still ashen grey. I could not move. I went on standing there."

youdao

我吓得动弹不得。

I was too scared to move.

《柯林斯英汉双解大词典》