当老师叫我的名字时，我的大脑一片空白。

My mind went blank when the teacher called my name.

youdao

记住每个人都有希望！睁开眼睛，你就可以出发了！你的大脑一片空白！

Remember there is hope for everyone! Open your eyes and you are ready to go! Your mind goes blank!

youdao

我做不了数学。我一做就大脑一片空白。

I cannot do maths. I've got a mental block about it.

《柯林斯英汉双解大词典》