1 sentence

1. 许多国家签署了不扩散核武器条约。

   xǔ​duō guó​jiā qiān​shǔ le bù kuò​sàn hé​wǔ​qì tiáo​yuē.

   Many countries have signed the Treaty on the Non-Proliferation of Nuclear Weapons.

   Source: Dong Chinese Dictionary