英语语法分析

The necessity for nuclear nonproliferation seems clear.

防止核扩散的必要性似乎清清楚楚。

The urgent need for nuclear nonproliferation is undeniable.

防止核扩散的紧迫性是不可否认的。

Third, constantly improving the international nonproliferation regime.

第三，应不断完善国际防扩散体制。