我不知道为什么。

I don't know why.

《柯林斯英汉双解大词典》

我不知道为什么所有人都为几只蚊子发这么大的牢骚。

I don't know why everybody makes such a fuss about a few mosquitoes.

《柯林斯英汉双解大词典》

我不知道为什么我落户到了迈阿密，但不管怎样我做了。

I don't know why I settled on Miami, but anyway I did.

《柯林斯英汉双解大词典》

我不知道为什么你们选择中文课？

I don't know why you choose Chinese class?

youdao

我不知道为什么我们没有做得更多。

I don't know why we haven't done more.

youdao

我必须这样做——尽管我不知道为什么。

I must—though I don't know why.

youdao

你说的对，我只是不知道为什么大家都回复这个问题。

You said it. I just don't know why everyone replies this question.

youdao

水鼠兰特坐立不安，他也不知道为什么。

The Water Rat was restless, and he did not exactly know why.

youdao

虽然她不知道为什么，但她已经觉得不那么“倔”了。

Already she felt less "contrary", though she did not know why.

youdao

慢慢地——慢慢地——他不知道为什么——他就像在花园里那样又活过来了。

Slowly—slowly—for no reason that he knew of—he was coming alive with the garden.

youdao

我不知道为什么并且觉得很苦恼。

I don't know why and feel distressed.

youdao

他们不知道为什么物质会具有质量。

They do not know why matter has mass.

youdao

我的父母都反对，我不知道为什么。

My parents were against it.I don't know why.

youdao

我的父母都反对，我不知道为什么。

My parents were against it. I don't know why.

youdao

他们也不知道为什么它突然发生了。

Nor do they know why it's suddenly happening now.

youdao

我不知道为什么我突然决心活下去。

I don't know why I got the sudden will to live.

youdao

我缓步回去，我不知道为什么。

I slowly return upon my steps, I do not know why.

youdao

我不知道为什么果树会这么可爱。

I'm not quite sure why fruit trees are so joyful.

youdao

我不知道为什么他们做出这样的选择。

I don't know why they make that choice.

youdao

我在茅屋前面站着，我不知道为什么。

I stood before this hut, I know not why.

youdao

“我不知道为什么不这么做，”他说。

"I don't see why not," he says.

youdao

我不知道为什么书包会在这儿

I don't know why here is a schoolbage.

youdao

我不知道为什么他只是站着。

I couldn't understand why he just stood there.

youdao

总之，他们就是反对，也不知道为什么。

In short, they don't know why they're against reform; they just are.

youdao

我在这茅屋面前停住了，我不知道为什么。

I stopped by this but, I do not know why.

youdao

也许我们不知道为什么。

Maybe we don't know why.

youdao

我自己都不知道为什么。

And I don't even know why.

youdao

我自己都不知道为什么。

And I don't even know why.

youdao