我想要這篇的譯文The advantages and disadvantages of a large populati

題目：

我想要這篇的譯文The advantages and disadvantages of a large population .
The advantages and disadvantages of a large population have long been a subject of discussion among economists.It has been argued that the supply of good land is limited.To feed a large population,inferior land must be cultivated and the good land worked intensively.Thus,each person produces less and this means a lower average income than could be obtained with a smaller population.Other economists have argued that a large population gives more scope for specialization and the development of facilities such as ports,roads and railways,which are not likely to be built unless there is a big demand to justify them.
One of the difficulties in carrying out a world-wide birth control program lies in the fact that official attitudes to population growth vary from country to country depending on the level of industrial development and the availability of food and raw materials.In the developing country where a vastly expanded population is pressing hard upon the limits of food,space and natural resources,it will be the first concern of government to place a limit on the birthrate,whatever the consequences may be.In the highly industrialized society the problem may be more complex.A decreasing birthrate may lead to unemployment because it results in a declining market for manufactured good.When the pressure of population on housing declines,prices also decline and the building industry is weakened.Faced with considerations such as these,the government of a developed country may well prefer to see a slowly increasing population,rather than one which is stable or in decline.

解答：

人口多的優點和缺點,一直是經濟學家討論的主題之一,有人認爲良好的土地是供應人口衆多最少的條件,經濟學家們認爲劣質土地必須培養和耕種,因此,每個人生產較少,並且這比可能獲得有更小的人口意味一項更低的平均收入人口衆多,可以讓更多的餘地和發展專業化的設施,如港口,公路和鐵路,不可能被修造,除非有維護他們的大需求.
困難的問題在執行全世界計劃生育節目的在事實在對人口增長的正式態度根據工業發展的水平和食物和原材料的可及性因國而異變化.人口極大的膨脹使得食物成爲一個緊迫的問題、空間和自然資源極限的發展中國家,它將是加強政府第一關心在出生率,什麼後果也許是.在高度工業化社會問題也許是更加複雜的.因爲它導致製成品的,一個衰退的市場越來越少的出生率也許導致失業.當人口壓力在住房的 衰落,價格也下降,並且建築業被減弱.面對考慮例如這些,一個發達國家的政府說不定喜歡看慢慢地增長的人口,而不是穩定或在衰落的一個.