1990年已经过去了,回顾这一年世界航天事业的风云变幻,就象浏览狄更斯的小说一样,其中既有成功的欢乐,又有失败的痛苦。这一年中无论是成功的还是失败的经历,都会给本世纪以至下个世纪的航天活动带来深远的 The year 1990 has passed. Reviewing this year's changing course of world space undertaking, like browsing Dickens's novels, there are both happy successes and unsuccessful pains. The success of this year, both successful and unsuccessful, will bring profound and far-reaching impact to the space activities of this century and the next century