据估计，目前全球约有2400万人有失忆、不辨方向等阿尔兹·海默症等各种形式痴呆症的症状。
An estimated 24 million people worldwide have the memory loss, problems with orientation and other symptoms that signal Alzheimer's disease and other forms of dementia.
患有阿尔茨海默症的美国人估计有540万—一个有望如新生代进入老年一样飙升的数字。
An estimated 5.4 million Americans have Alzheimer's disease - a figure expected to rise sharply as baby boomers enter their older years.
Suttles说BP的官方估计是建立在从桶中流出来可见的原油上的，还有“多少油是浮在海的表面的”。
Suttles said BP's official estimate is based on the visual observation of oil flowing from the barrel, and "how much oil is on top of the sea".
肯尼迪说初步估计从海蓬子中提取的燃料可以和石油燃料媲美，但他同时还警告说这些还需要更细致的研究。
Kennedy says that initial estimates suggest that fuel produced from salicornia could be competitive with petroleum-based fuels, but warns that detailed studies still need to be done.
陈文海的头发常年不洗，其头发的确切长度不得而知，但据估计有6.8米。
The exact length of Tran Van Hay's unwashed hair was unclear but some estimates put it as long as 6.8 metres.
据估计，近8000 razorbills, 20多万海雀每年将这些岛屿作为自己繁殖的地方。
It's estimated that nearly 8,000 razorbills and more than 200,000 puffins use these islands as their breeding grounds each year.
EWEA估计，要建造一个连接北海地区（包括波罗的海、爱尔兰海以及英吉利海峡）所有国家的超级电网，造价在400亿美元左右。
The EWEA estimates the cost for building a grid connecting countries across the North Sea region including the Baltic Sea, Irish Sea and English Channel would cost in the region of $40 billion.
这种建立模型的思想还可以应用到需要计算海森矩阵的动态无功优化、最优潮流以及状态估计等问题的算法中，以提高其计算速度。
This proposed modeling idea can also be applied to dynamic reactive optimization, optimal power flow and state estimation for a faster calculation.
海格为霍格·沃茨种一块卷心菜地，估计是给学校厨房供应卷心菜用的。
Hagrid maintains a cabbage patch for Hogwarts, presumably to supply the school kitchens.
海格为霍格·沃茨种一块卷心菜地，估计是给学校厨房供应卷心菜用的。
Hagrid maintains a cabbage patch for Hogwarts, presumably to supply the school kitchens.
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