一个挥之不去的问题阻碍了许多新企业的脚步，即“我为什么需要它？”或者，也许更能说明问题的是，“为什么你需要知道这个？”

The persistent question of "Why do I need that?"—or, perhaps more tellingly, "Why do you need to know that?"—dogs the steps of many new ventures.

youdao

一个挥之不去的问题是“我为什么需要它？”——或者，也许更能说明问题的是，“为什么你需要知道这个？”——-阻碍了许多踏入新的冒险的脚步。

The persistent question of "Why do I need that?"—or, perhaps more tellingly, "Why do you need to know that?" —dogs the steps of many new ventures.

youdao

为什么你需要学会分享生活？

Why do you need to learn to share life?

youdao

I would think that it would approach inifinity, and I would need to think about it and get back to you in terms of why we don't actually hit it and see something with an infinite wavelength.

我会认为波长会接近无穷大，而且我需要考虑一下,然后返回来告诉你,为什么我们没有说对,为什么我们没有看到,无穷大波长的东西。

麻省理工公开课 - 化学原理课程节选

You need to listen to what your classmates are saying and say why you disagree with them.

你需要去听你的同学在说什么,跟为什么你和他们意见不一。

耶鲁公开课 - 死亡课程节选

Now, why the Fat Lady? It's this mythical, incredibly humanly embodied-- whenever you see a fat lady in a novel, one of the first things you want to ask is: why does that person need to be excessively embodied?

现在，为什么是胖太太，这是个神话，人们呈现了，无论你什么时候看到一个胖太太,在小说里，你首先会想问：,为什么那个人需要被这样过多的描写呢？

耶鲁公开课 - 1945年后的美国小说课程节选