Third party processing could ensure the material is enriched only to the point needed for civilian purposes, and below the level called for in nuclear weapons.

VOA: standard.2009.10.04

Everything is interconnected on the higher level on a spiral-- in other words will lead to deep understanding and hopefully assimilation of the material.

所有内容在一个更高的水平上呈螺旋状互相联系-,换言之，会带来深刻的理解和我所希望的对材料的吸收。

哈佛公开课 - 幸福课课程节选

Everything is interconnected on the higher level on a spiral-- in other words will lead to deep understanding and hopefully assimilation of the material.

所有内容在一个更高的水平上呈螺旋状互相联系-,换言之，会带来深刻的理解和我所希望的对材料的吸收。

哈佛公开课 - 幸福课课程节选