Directions: Translate the following text into Chinese.
When people in developing countries worry about migration, they are usually concerned at the prospect of their best and brightest departure to Silicon Valley or to hospitals and universities in the developed world. These are the kind of workers that countries like Britain, Canada and Australia try to attract by using immigration rules that privilege college graduates.
发展中国家的人考虑移民时，通常关心的是到硅谷或发达国家的医院和大学里工作这样最美好最光明的前景。这些人正是英国、加拿大和澳大利亚等国家想要通过对大学毕业生提供优惠的移民条例来吸引的人才。
Lots of studies have found that well-educated people from developing countries are particularly likely to emigrate. A big survey of Indian households in 2004 found that nearly 40% of emigrants had more than a high-school education, compared with around 3.3% of all Indians over the age 25. This "brain drain" has long bothered policymakers in poor countries. They fear that it hurts their economies, depriving them of much-needed skilled workers who could have taught at their universities, worked in their hospitals and come up with clever new products for their factories to make.
许多研究表明，发展中国家受过良好教育的人尤其可能移民。2004年对印度家庭的一项大规模调查表明，将近40%的移居国外的人受过高中以上教育，而与之形成对比的是：全印度25岁以上受过高中以上教育的人约为3.3%。这种“人才流失”现象长期困扰着贫困国家的决策者。他们担心这会损害本国经济，使他们失去急需的熟练的劳动者，这些人本可以留在国内在大学任教、在医院工作或设计新奇产品供工厂生产。