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.

youdao

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.

youdao

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.

youdao