Non-proliferation is the effort to stop certain weapons — above all nuclear bombs, and also chemical and biological weapons — from spreading to more countries. It is not only 'please make fewer bombs.' It is especially 'countries that do not have these weapons yet should not start, and countries that have them should not help others build them.' You will hear it in news, treaties, and UN talk.

Non-proliferation不擴散 is the effort to stop certain weapons是指設法阻止某些武器 above all nuclear bombs, and also chemical and biological weapons尤其是核子彈，也包括化學和生物武器 from spreading to more countries擴散到更多國家。It它 is not only 'please make fewer bombs.'不只是「請少造一點炸彈」 It它 is especially而是特別強調 'countries that do not have these weapons yet should not start「還沒有這些武器的國家不應該開始造」 and countries that have them should not help others build them.'「已經有的國家也不該幫別人造」。You你 will hear it in news, treaties, and UN talk會在新聞、條約和聯合國的討論裡聽到這個詞。

The famous agreement is the Nuclear Non-Proliferation Treaty.

The famous agreement著名的協議 is the Nuclear Non-Proliferation Treaty是《核不擴散條約》（Nuclear Non-Proliferation Treaty）。

Though actually, the word sounds tidy, and the politics are not: countries argue about who already 'counts' as a nuclear power, who may run civilian nuclear plants, and whether the big powers are cutting their own weapons. Ordinary people rarely say this word; they say 'stopping the spread of nuclear weapons.' In speeches it is often set next to disarmament, which is a bigger hope: fewer weapons, or none, in the countries that already have them.

Though actually不過其實 the word這個詞 sounds tidy聽起來很乾淨俐落 and the politics are not但政治現實並不是 countries argue about各國會爭論 who already 'counts' as a nuclear power誰已經「算是」核武國家 who may run civilian nuclear plants誰可以經營民用核電廠 and whether the big powers are cutting their own weapons以及大國到底有沒有在削減自己的武器。Ordinary people一般人 rarely say this word很少講這個詞 they大家 say 'stopping the spread of nuclear weapons.'會說「阻止核武擴散」。In speeches在演說裡 it它 is often set next to disarmament常常會跟disarmament（裁軍）放在一起講 which is a bigger hope那是個更大的期望 fewer weapons, or none, in the countries that already have them已經有武器的國家減少武器，甚至完全沒有。