the scope of cooperation造句

• At the invitation of the us side , chinese research institutes and american national laboratories began exchanges and cooperation in the 1990s , with the scope of cooperation ranging from nuclear proliferation prevention to arms control and environmental protection
  应美方的邀请，中国有关研究机构与美国国家实验室从90年代开始开展了交流与合作，合作领域包括防止核扩散、军备控制和环境保护研究。