That is, anywhere from 250 billion to 500 billion "earths".
也就是处在2500亿年到5000亿年间的“地球”。
Scientists have long suspected that several factors lead to greater temperature swings at Earths polar regions than elsewhere.
长期以来，科学家们一直怀疑有几个因素导致了地球极地地区比其他地区更大的温度波动。
Beryllium difluoride is very soluble in water, unlike the other alkaline earths.
铍二氟化物极易溶于水，与其它碱土不同。
Right now, global growth is using about 1.5 Earths.
目前，全球增长正在使用约1.5个地球。
We find more Earths, we find more in the habitable zone.
我们会发现更多的“地球”，我们会在适合居住的地带找到更多行星。
After all, the term 'rare earths' is a misnomer, experts say.
专家说，毕竟“稀土”这个术语就不恰当。
Rare earths are used for wind turbines and other green technologies.
稀土用于风力涡轮机和其它绿色科技。
Those same rare earths are found in America, mainly in shut-in mines.
美国也有稀土矿资源，而且主要是在已关闭矿井中。
Various players have tried to recycle rare earths and metals in Japan.
在日本的各个参与者都努力回收稀土和金属。
Even with the JWST, however, finding extrasolar 'Earths' will be tough.
即便使用JWST，寻找太阳系之外的“地球”依然不是轻而易举的事儿。
Its factory is up and running, recycling 19 metals – but no rare earths.
其工厂已建成投产，从事于19种金属的加工回收，但其中没有稀土金属。
Yet such space probes are not the only way of searching for other Earths.
然而太空探索并不是寻找另一地球的唯一途径。
And we're about to find out whether there are any other Earths out there.
我们在做的是找出别处是否还有地球。
By 2015, global demand for rare earths is expected to reach 205, 000 tonnes.
到2015年，全球对稀土的需求预计将达到205,000吨。
Exports of rare earths were subject to an unannounced weeklong ban (see article).
稀土出口下了莫名其妙的一周禁止令(见文章)。
For a period in late 2010, it cut off Japan's access to its rare earths entirely.
这使得在2010年年底的一段时间里，日本几乎完全断了稀土的供应。
The greenhouse effect has been part of the earths workings since its earliest days.
从最早期开始，温室效应一直是地球运转方式的一部分。
Japan is also pushing for new manufacturing processes that do not require rare earths.
日本也在钻研不需要稀土新的制造工艺。
The GRS is actually a massive anti-cyclonic vortex large enough to engulf several Earths.
这个GRS实际上是一个大到足以吞没几个地球的巨大的反气旋性涡旋。
The Kepler orbiting observatory was launched with a simple mission - to find other Earths.
随着一项简单的任务，寻找其他“地球”，开普勒轨道天文台启动。
We sincerely honor you as you move into the final two years of Earths Crystalline Ascension.
我们真诚地为你们进入【地球水晶扬升】的最后两年而感到光荣。
No one knows, but many scientists believe that it's inevitable that other Earths will be found.
没人知道，但很多科学家相信，未来必然会发现其他类似地球的行星。
Some companies, such as General Electric, are already moving to reduce their use of rare earths.
有些公司，例如通用电气，已经开始改进技艺，以减少稀土金属的使用。
Humans are overusing the planet's resources and will need two Earths by 2030, a new report warns.
一份新报告警示：由于人类过度的使用地球上的资源，到2030年人类将需要两个地球。
Humans are overusing the planet's resources and will need two Earths by 2030, a new report warns.
一份新报告警示：由于人类过度的使用地球上的资源，到2030年人类将需要两个地球。
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