一切似乎是搅在一种乏味的、恶心的灰白中，我膝盖发软。

Everything seemed to wash together in a kind of bland, sickening grayness, and my knees buckled.

youdao

我的膝盖发软了。

My knees gave under me.

《柯林斯英汉双解大词典》

我的胃里一阵翻腾，膝盖也发软了。艾夫勒夫人会怎么惩罚我呢?。

My stomach churned and my knees felt weak. What would Mrs. Eiffler do to me?

youdao