For a short cut-over period, it was possible to use both the older and newer IIPx authentication.

在较短的过渡期间，可以同时使用新旧两种IIPx身份验证。

youdao

Every 27 years, a bright star called Epsilon Aurigae fades over period of two years, then brightens.

每隔27年，一个被称为牧夫座ep silon的明亮恒星都会进入为期2年的暗淡时期，然后再度变亮。

youdao

All these changes happened over a period of time.

所有这些变化都是在一段时间内发生的。

《牛津词典》

The study involved forty-four traders and their profits and losses over a twenty-month period ending in two thousand seven.

VOA: special.2009.02.25

It's also going to be the process of watching an artistic form unfold over a very exciting period of time.

更是一个观察某种艺术形式在一段,刺激的时间里展现的过程。

耶鲁公开课 - 1945年后的美国小说课程节选

The little insects were crawling around, the plants were there. And come back and look at it, over a period of weeks, and see what's changing.

我可以看到昆虫爬来爬去，还看到有些植物，几个星期后，再来看，看看发生了什么变化。

普林斯顿公开课 - 人性课程节选

What they found is that while firms with fewer than 100 employees did in fact create 56% of gross new jobs over the period, they only accounted for 39% of net job creation over the period.

FORBES: Startups Are Not All The Growth Engines Of The U.S. Economy (And Why This Matters For Crowdfunding)

And that for a city of this size over a period of time - that's a significant number...normally in big cities we may see one or two over a period of say half a dozen years.

BBC

To do this we created a "list of lists" looking at tax haven listings over a period of more than 30 years and selecting for testing, broadly speaking, all those that came on two lists or more over that period.

FORBES