在二十世纪中，许多国家都不断地扩大生物和化学武器储备。
The 20th century witnessed a continuous accumulation of potential biological and chemical weapons in many nations.
中国主张全面禁止和彻底销毁生物武器和化学武器，坚决反对此类武器的扩散。
China stands for complete prohibition and thorough destruction of biological and chemical weapons and firmly opposes proliferation of such weapons.
中国严格履行《禁止化学武器公约》和《禁止生物武器公约》规定的义务，不以任何方式协助、鼓励任何国家获得化学武器和生物武器。
China strictly adheres to its obligations under the CWC and BWC, and will not in any way help or encourage any country to obtain chemical or biological weapons.
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