I never knew why.

我从不知道为什么。

youdao

MR. BENNETT: Yes, he had to leave the country quickly. I never knew why. He never saw his mother and father again.

班纳特先生： 是的， 他必须尽快离开爱尔兰。我从不知道为什么。他再也没有见过他的爸爸和妈妈。

youdao

I knew a Jacob Matthews from work a number of years ago, and he'd gotten it into his mind to stalk me, but I never knew why.

几年前，我因工作认识了一位叫雅各布·马休斯的人，他很喜欢跟踪我，但我根本就不知道是什么原因。

youdao