If their population is tracked through time, it will be seen to be particularly unstable—soaring and plummeting in irregular cycles.
如果对它们的数量进行时间记录，就会发现它是很不稳定的——以不规则的周期急剧上升下降。
It is thanks to an ageing population and soaring health and pension costs that America's debt ratio will still be rising in a decade.
在美国，归因于其老化的人口以及飙升的健保及退休金成本，债务比率在未来十年仍将继续攀高。
Central bankers may hope that soaring oil and food prices will prove to be just a blip, and will not result in secondary effects such as higher wages.
央行兴许希望飞涨的石油和食物价格将证明只是个信号但不会引发如提高工资这样的次级效应。
Anyone looking to book a flight this summer can see why greener, more fuel-efficient aeroplanes will be a good thing: soaring fuel prices have had a stratospheric effect on ticket prices.
想要预定今年夏天航班的人们会发现为什么更环保、更省油的飞机将是一件好事：油价飙升已对机票价格造成了较大影响。
Israeli and American Jews wanting to live, work or study in the European Union are finding that a Polish background can be just the ticket: applications for Polish passports are soaring.
那些想在欧盟国家生活工作或者学习的以色列和美国犹太人发现，拥有波兰背景去欧盟更容易：申请波兰护照的人迅速增长。
But, with the soaring rise in the price of basic food staples such as cooking oil, rice and soybeans, Iwan is no longer able to make a profit and fears soon he will not be able to feed his family.
但是，随着食用油、大米和大豆这些基本的主食价格的飙升，伊万现在没钱可赚。他担心很快他就不能给家人提供糊口的东西了。
A poor harvest brought on by bad weather was the original culprit, but with prices soaring, hoarding may also be responsible.
其实收成如此糟糕的罪魁祸首是当地恶劣的天气。但随着价格上涨，贮藏同样也是其中的原因。
One thing remains indisputable: With the price of precious metals soaring, minting those London Olympic MEDALS will be more expensive than ever before.
有一点毋庸置疑：重金属的上升，意味着铸造伦敦奥运会金牌的成本比以前更高了。
Soaring property prices played such an important role in the financial crisis-fuelling ever more borrowing-that recovery is unlikely to be robust until the sector peps up.
飞涨的房地产价格通过更进一步地刺激借贷对金融危机起了推波助澜的作用，房地产业如果不能振兴，经济复苏就不可能有强劲的势头。
Soaring across the Atlantic, we had told each other how exciting and fun this was going to be.
飞机飞越大西洋时，我们告诉彼此，这将多么激动人心、充满乐趣。
The impact of the asset sales will be small, however, set against soaring public indebtedness.
然而，资产出售的作用微乎其微，无法应对迅速增长的公共债务。
Now, with worldwide demand soaring, the stars want to be heard reading unabridged books.
随着全球有声书需求飞升，人们想要听到大牌们朗读的足本有声书了。
Let us continue to be guided by its founders' soaring example, and move through the conflicts and divisions of our time to a day when people from every part of this world can live together in peace.
让我们以创建者为榜样，指导我们继续前进，穿过冲突和种族隔离的时代，走到我们世界每一民族共同和平相处的时代。
The IPO would also be well timed to take advantage of a soaring local share market.
中石油IPO的时间也进行了精心安排，以利用内地市场不断攀升的良机。
The Sahel would be turned into a desert by the soaring population of west Africa.
由于西非人口激增，萨赫勒地区将可能变成沙漠。
Despite soaring commodity costs, baked beans are still relatively cheap and are generally considered to be good for the heart.
尽管这会增加日常开销，但相对来说烘豆儿来说仍然是很划算的，其被普遍认为是对心脏很有益处的。
The impact generates soaring mists and thunderous sounds that can be seen and heard for great distances.
远处即可看到激流产生的雾气，听到那雷鸣般的声音。
"The flying scenes are incredible," she says, referring to Hiccup's soaring rides atop Toothless, which would be physically impossible with the mini-Toothless in her eight-volume series.
“飞翔的场景让人难以置信，”她提到Hic cup骑在“无牙”身上咆哮飞过的场面时说道。这样的设定在她的8卷系列小说里是不可能实现的，因为“无牙”的身型非常小。
More input trade fairs should be organized urgently, he says, this time as part of the Initiative on Soaring Food Prices (ISFP) launched by FAO in December 2007.
他认为应当立即组织更多的投入物展销会，这一次它们将作为粮农组织于2007年12月发起的“应对粮价飞涨计划”的一部分。
“It’s everything a Polynesian island should be—blue lagoon, sand-fringed motus, soaring peaks, ” says Lonely Planet founder Tony Wheeler.
“它拥有一个波利尼西亚的岛屿应有的一切——蓝色的珊瑚礁、铺满沙子的茅图斯小群岛以及高耸的山峰，”孤独星球（Lonely Planet）创始人托尼·惠勒说。
Meanwhile the price of housing, a service that must be consumed where it is produced, is soaring. In Dubai, rents rose by 30% in 2006 and another 17% in 2007.
同时，住宿，这项必须消费的服务在哪里生产呢，它的价格高的令人乍舌。
The strategy seems to be working. Business has picked up, with sales soaring by 15 percent this quarter - demonstrating that consumers are buying in to the renewed cachet.
该战略似乎起了作用。本季度寇驰的业务明显好转，销量飙升了15%——这证明对于其重新建立的声望，消费者很买账。
Japan's gold holders may be preparing to cash out of some bullion after the yen's drop has sent domestic prices of the metal soaring.
在日圆贬值导致国内金价飙升后，日本黄金持有者可能正准备将部分金条换成现款。
The sky was blue, the larks were soaring high over the green corn, I thought all that country-side more beautiful and peaceful by far than I had ever known it to be yet.
蓝蓝的天空，云雀在绿色的谷地上空翱翔，噢，如今的乡间比以往我曾生活过的乡间更加美丽，更加，更加平静。
The soaring rise in interest rates finally appeared to be losing momentum.
利率的飞速上涨的势头终于减弱了。
The soaring rise in interest rates finally appeared to be losing momentum.
利率的飞速上涨的势头终于减弱了。
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