N-UNCOUNT [usually NOUN n](核武器或化学武器的)防扩散，不扩散Non-proliferation is the limiting of the production and spread of something such as nuclear or chemical weapons. (核武器或化学武器的)防扩散，不扩散
...the Nuclear Non-Proliferation Treaty.
《防止核扩散条约》
The declaration deals with disarmament and the non-proliferation of nuclear weapons.