評論
打印
As is shown by the two graphs,the U.S. population soared from 2 million to 250 million from 1800 to 1990.
如圖所示，從1800年到1990年，美國人口從200萬猛增到2.5億。
In contrast, the number of wildlife species no longer existing shot up,adding up to 70 over the same period of time.
與此相反，滅絕的野生物種數也直線上升，在同期增加到70種
It is obvious that the extinction of wildlife resulted from the population explosion.
顯而易見，野生動物的滅絕源于人口劇增。
We may cite a variety of reasons for this situation.
我們可以引用很多原因解釋次現象。
First of all, the destruction of ecological balance plays a pushing role.
首先，生態平衡的破壞發揮了主導作用。
Due to population problems,pollution and desertification are becoming increasingly serious.
由于人口問題，污染和沙漠化日漸嚴重。
Furthermore, a great number of species were killed for food.for money and even for fun.
其次，很多物種由于捕食、贏利甚至娛樂而被獵殺。
Even worse, with the rapid growth of human population,
更糟糕的是，由于人口急劇增長，
inhabitable areas were expanding so fast that few areas were left for wild animals.
人類居住地擴張如此迅速，以至于野生動物無家可歸。
To sum up, it is imperative for us to take effective measures to protect wildlife.
總而言之，我們很有必要采取有效措施保護野生動物。
Firstly, the U.S. government should pour more investment into wildlife protection in a bid to create a better environment.
首先，美國政府應向野生動物保護投入更多資金以便改善環境。
Secondly, the birth rate in the U.S. must be put under control as the dramatically expending population gives rise to serious environmental problems.
其次，由于人口激增導致了嚴重的環境問題，美國人口出生率必須得到控制。
