上册unit 2
Many countries have adopted systems of conventional education in order to enhance the average level of education . 许多国家采用传统教育系统以提高教育的平均水平
Intoxicated by a sense of its own power, mankind has proceeded further and further with experiments that could destroy itself and the world. 被自我力量的沉醉,人类一步步发展,一步步实验,可能会破坏自己和世界
As nations are able to produce tens of millions of casualties in a matter of hours, peace has become a moral imperative必要的事. 由于国家能够在几小时内产生数以百万计的伤亡人数,和平已成为一种道德义务。
The grim-looking