They must also keep swimming to keep from sinking, since most have largely or completely lost the swim bladder, the gas-filled sac that helps most other fish remain buoyant.
它们还必须不停地游动以避免下沉，因为大多数鱼基本上或完全失去了鱼鳔，这个充满气体的囊帮助大多数其他鱼保持浮力。
Dispelling researchers' initial doubts, computer models have confirmed that this formation is buoyant enough to rise slowly within the mantle and strong enough to push Africa upward as it rises.
计算机模型消除了研究人员最初的疑虑，证实了这个结构有足够的浮力在地幔内部缓慢上升，并且有足够的力量在它上升的同时推动非洲板块上升。
The boat bobbed like a cork on the waves: light and buoyant.
小船在大浪中犹如软木塞，轻轻漂来漂去。
You will feel more buoyant and optimistic about the future than you have for a long time.
对于未来，你会比很久以来所感受到的更加快活、乐观。
We have a buoyant economy and unemployment is considerably lower than the regional average.
我们有繁荣的经济，失业率远远低于区域平均值。
While there is still sufficient trapped air within the container to keep it buoyant, it will float.
只要容器中仍然有足够的空气使它能浮起，它就能漂浮。
No fresher rose hangs on the branches than she; no appleblossom carried away by the wind is more buoyant!
任何玫瑰花枝上的花朵都没有她鲜艳；任何被风吹走的苹果花都没有她轻盈！
These methods have revealed some unexpectedly immense formations in the deepest parts of the mantle; the largest of these is a buoyant mass of hot rock directly below Africa's southern tip.
这些方法在地幔最深处揭示了一些意想不到的巨大构造；其中最大的一块是在非洲南端正下方的一块热岩。
Moreover, job markets in the cities are more buoyant, and therefore, it is much easier for young people to find jobs there compared to the rural areas where economic activities are limited.
此外，城市的就业市场更加活跃，因此与经济活动有限的农村地区相比，年轻人在城市更容易找到工作。
Geoffrey's tone was strangely buoyant.
杰弗里的语调轻快得有点奇怪。
This keeps supplies tight and prices buoyant.
这些都使供应趋于紧张和价格获得支撑。
INVESTORS have entered this year in a buoyant mood.
投资者们怀着愉悦的心情，踏入了新的一年。
THIS ought to be a buoyant time for Nicolas Sarkozy.
对于尼古拉·萨科齐来说，现在应该是个大快人心的时刻。
Revenues are driven by advertising, which is buoyant.
报纸收益受到处于上升趋势的广告业驱动。
And the British Retail Consortium reported buoyant sales last month.
以及英国零销商协会的报告中指出上个月销量旺盛。
Although asset prices may be buoyant at the moment, there are other risks ahead.
虽然此时资产价格正在攀升，前方还有其他风险。
Figures from the French champagne industry show that sales in the UK are buoyant.
来自法国香槟产业的数据表明英国的香槟销售正在渐入佳境。
Their auditing and tax-advice businesses are stagnant. But consulting is buoyant.
审计和税收建议业务停滞不前，但是咨询业务却有起色。
When we are in buoyant health, death is all but unimaginable. We seldom think of it.
当我们心宽体健时，死亡几乎是不可想象的，我们很少想到它。
When we are in buoyant health, death is all but unimaginable. We seldom think of it.
当我们身强体健之时，死亡简直不可想象，我们很少考虑到它。
The long expansion was sustained by buoyant private consumption and public spending.
长期扩张有赖于繁荣的私人消费和公共支出。
But the company's recent history is not quite as buoyant as its bottom line suggests.
但是这个公司最近的故事不像其底线所显示的那样飘忽不定。
South Africa's once-buoyant market has likewise flipped from rapid growth to retreat.
曾经一度蒸蒸日上的南非市场也同样从快速增长变成了衰退。
It is thus not difficult to imagine that financial markets can stay buoyant for a while yet.
目前为止，不难想象金融市场的繁荣将会继续持续一段时间。
The buoyant mood extends to the boardrooms and watering holes of Lagos, the business capital.
在商业之都拉各斯，从会议室到酒吧，欢快的情绪随处可见。
With warm, buoyant water on top and cold, dense water below, the water column doesn't mix easily.
上层水温暖而浓度小，下层水寒冷而浓度大，因此水体难以混合。
Mr Whalen is not alone in wondering how the American economy will cope without a buoyant property market.
不单单是惠伦怀疑一个充满活力的房地产市场不存在时美国经济将如何应对。
Financial markets are buoyant, business confidence is rising and global growth seems increasingly robust.
金融市场上扬，企业信心增加以及全球增长似乎日益强劲。
Wall Street still has the support of buoyant corporate profits, thanks to foreign earnings and cost-cutting.
由于外汇收入与成本削减，华尔街仍受到回升的企业利润的支持。
Paradoxically, while the world's movie capital is in turmoil, the appetite for its products remains buoyant.
矛盾的是，尽管全球电影资本处于动荡之中，其产品需求依然强劲。
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