If surviving copies are few, the stemma perforce brings into proximity manuscripts that were widely separated in time and place oforigin.
如果现存的手稿很少,家谱就必须纳入那些在时间和族地都分散的手稿。
2
What I do find interesting is the originof the universe, the shape of space-time and the nature of black holes.
我真正感兴趣的是宇宙的起源、时空的形状和黑洞的性质。
3
Such work has helped put Boston and Cambridge among the elite centers of studies of life’s origin, and Szostak is now devoted essentially full-time to synthesis of life.