光线，大约是阅读所需数量的千分之一，仅仅是一个开始。

The light, about one thousandth of the amount needed to read by, is just a start.

youdao

你真的能够拉出一条36000公里长的纳米管线，或者纳米管带，其强度比钢铁要高，但其厚度可能只是人类头发的千分之一。

You could actually draw out a 36,000-kilometer strand or ribbon of nanotubes stronger than steel, but maybe a thousandth the thickness of a human hair.

youdao

在当前对联邦赤字的担忧中，“伸手摘星”的尝试似乎是一种可有可无的奢侈——似乎只要一年省下千分之一的预算就能解决我们的问题。

Amid the current concerns about the federal deficit, reaching toward the stars seems a dispensable luxury—as if saving one-thousandth of a single year's budget would solve our problems.

youdao

So, what autism is a disorder that strikes about one in a thousand people, mostly boys.

孤独症的发病率约为千分之一,病患多是男孩

耶鲁公开课 - 心理学导论课程节选

If the probability is 1 in 1,000 that a house burns down and there are 1,000 houses, then the probability that they all burn down is 1/1000 to the 1000th power, which is virtually zero.

如果一栋房子着火的概率是千分之一,然后假设有1000栋房子,那么这一千栋房子全都着火被烧掉的概率,就等于千分之一的一千次方,基本上就是0了

耶鲁公开课 - 金融市场课程节选