Helium is the by product of millennia of radioactive decay from the elements thorium and uranium.
氦是钍和铀元素数千年放射性衰变的副产品。
Once the soil has been removed by erosion, only the passage of centuries or millennia will enable new soil to form.
一旦土壤被侵蚀，新的土壤只有经过几个世纪或几千年才能形成。
Arching 275 feet and across 290 feet, Rainbow Bridge in the Utah desert has been a source of inspiration and wonderment for millennia.
拱高275英尺，跨度290英尺，犹他州沙漠里的彩虹桥一直是几千年来的灵感和奇迹的来源。
While it is unknown just how much of this is true, it is certainly known that silk cultivation has existed in China for several millennia.
虽然我们不知道这其中有多少是真实的，但可以肯定的是，丝绸栽培在中国已经存在了几千年。
Perhaps even earlier, there had emerged on the steppes of Inner Eurasia the distinctive types of pastoralism that were to dominate the region's history for several millennia.
也许更早的时候，在欧亚大陆内部的大草原上就出现了独特的游牧文化，这种文化主导了该地区几千年的历史。
If represented graphically, the curve for all these changes looks rather like that well-known hockey stick: with little change over millennia and a dramatic upswing over the past decades.
如果用图表进行展示的话，这些变化呈现出来的曲线很像大家熟悉的曲棍球杆：以往数千年都没什么变化，而在过去的几十年内却突飞猛涨。
It's been disturbed for the first time in millennia.
这是千年来第一次被打扰。
It's every archaeologist's dream to find a lost civilization, to make some huge discovery, to find artifacts no one else has laid a hand on in millennia.
每个考古学家的梦想都是找到一个失落的文明，做出一些重大的发现，找到千年来无人触及的手工艺品。
They were born just a few millennia too soon.
他们早生了几千年。
We have lived on this earth for many millennia.
我们生活在这地球上有好几千年了。
And man has been tampering with nature for millennia.
而且人类几千年来一直在改造自然。
The history of bull fighting stretches back millennia.
斗牛的历史迄今已有一千多年了。
Diasporas have been a part of the world for millennia.
几千年以来移居群体一直是世界的一部分。
This is for the first time in more than five millennia.
这是五千多年以来的第一次。
Our cognitive biases have survived for millennia for good reason.
几千年来认知偏差一直存自有它存在的充分理由。
Families are matters of millennia, far beyond a few generations.
家庭，事关千年，它远远超越了几代人。
Taiji’s men have chased whales on Japan’s coast for perhaps millennia.
而太地人在日本沿海捕鲸的历史可能已经有上千年了。
The old ways began to change with foreign influence some two millennia ago.
这一节日传统在大约两千年前开始受到外来影响。
The chart below shows a population-weighted history of the past two millennia.
下表展示了过去两千年以来按人口加权的历史。
Human beings have been seeking effective ways to deal with complexity for millennia.
几千年来，人类一直在寻找解决复杂性的有效方法。
Parabolas have been studied for millennia, and their properties are well understood.
人类已经研究了抛物线近千年，对它的性质理解的很透彻。
In it, he argues that technology has inverted our millennia-old relationship with memory.
在这本书中，他认为：技术已经颠倒了我们上千年来与记忆之间的关系。
The question has bothered philosophers for millennia and computer scientists for decades.
这个问题困扰了哲学家们上千年，也困扰了计算机科学家们数十年。
We did actually manage quite well for many millennia without computers or mobile phones.
其实，在许多个没有电脑和手机的千年里我们都过得不错。
Falling water levels are not the only changes at Lake Suguta over the past several millennia.
在过去的几千年里水位下降并不是苏加塔湖唯一的变化。
Microbes can survive for many, many millennia, though scientists are still debating how long.
微生物可以生存很多很多个千年，尽管科学家仍在争论究竟多长。
Microbes can survive for many, many millennia, though scientists are still debating how long.
微生物可以生存很多很多个千年，尽管科学家仍在争论究竟多长。
应用推荐