1970年,美国总统尼克松在就职演说中雄心勃勃地宣布了两项计划:载人登月和攻克癌症。希望在短短的几年里解决这两个问题,但30多年过去了,老总统载人登月的计划早已实现,攻克癌症却仍然在艰苦的努力之中。由此可见,攻克癌症,比登天还难。癌症,到目前为止,仍然是威胁人类生命健康的主要疾病之一。 In 1970, U.S. President Richard Nixon announced two ambitious plans in his inauguration speech: Manned Landing and Conquering Cancer. It is hoped that these two issues will be solved in a short period of time. However, over 30 years have passed, the old man’s plan for manned missions to the moon has long been realized, and conquering cancer is still a hard work. It can be seen that it is harder to overcome cancer than to attain it. Cancer has so far been one of the major diseases that threaten human life and health.