今天，对核安全和不扩散，以及对美俄关系而言，都是一个重要的里程碑。

Today is an important milestone for nuclear security and non-proliferation, and for U.S.-Russia relations.

youdao

今天，对核安全和不扩散，以及对美俄关系而言，都是一个重要的里程碑。

Today is an important milestone for nuclear security and non-proliferation, and for U.S.-Russia relations.

youdao