但当我在麻省理工学院获得博士学位,然后作为博士后从事太空研究时,这个问题开始困扰我。
But?while?earning?my?Ph.D. at MIT and then as a post-doctor doing space research, the issue started to bother me.
当我在麻省理工学院获得博士学位,然后作为博士后从事太空研究时,这个问题开始困扰我。
While earning my Ph.D. at MIT and then as a post-doctor doing space research, the issue started to bother me.
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