I couldn't understand why he just stood there.

我不知道为什么他只是站着。

youdao

I couldn't understand why they had done this to me.

我无法看她，我不能理解为什么他们这样对我。

youdao

You were bewildered and couldn't understand why she had left.

你很困惑无法理解她为什么离开。

youdao

Plato's going to argue once we understand the sort of metaphysical nature of the soul, we'll see why it couldn't be destroyed.

柏拉图会为我们证明,一旦我们理解了灵魂的哲学本质,我们就会明白为什么不能摧毁灵魂

耶鲁公开课 - 死亡课程节选

He couldn't understand why terminal cancer wouldn't qualify him for benefits, says his sister, Diane Penny.

WSJ: Backlog of Social Security Disability Cases Leaves the Terminally Ill Waiting

She couldn't understand why -- surely there must have been some law he must have broken.

CNN: SHARE THIS

The flight attendants on the plane couldn't understand why she was crying.

CNN: SHARE THIS