There are striking differences in life span between different species, but within one species the parameter is relatively constant.

不同物种之间的寿命存在显著差异，但在同一物种内，这一参数是相对稳定的。

youdao

Good and evil may co-exist within one family.

善与恶可能共存于同一个家庭。

《柯林斯英汉双解大词典》

Amorality and intelligence is probably the most lethal combination to be found within one personality.

缺乏道德却聪明智慧可能是同一人格中危害最大的组合。

《柯林斯英汉双解大词典》

The foundation says ninety-five percent are accepted into a university graduate program within one year of getting a fellowship.

VOA: special.2009.09.24

And you often end up there with--something closer to person's being housed within one skull.

而我们常常只会想到,人类的人格特性都储存在,整个大脑里。

耶鲁公开课 - 死亡课程节选

It can take us through the full panoply of human emotions within one particular composition.

让我们在一首曲子中经历人类所有情感的的盛装聚会。

耶鲁公开课 - 聆听音乐课程节选

Short-term capital needs--as in, assets likely to be expensed or converted to cash within one year.

FORBES: Entrepreneurs

The agency is expected to deliver a final report on the site within one month.

BBC: IAEA calls for improvements at Japan's Fukushima plant

Yes, but the fuel-savings will more than match that cost within one year of driving.

WHITEHOUSE: The White House Blog: The President