China stepped up dialogue with the major countries and increased trust and expanded cooperation with them.

我国同主要大国加强了对话，增进了信任，扩大了合作。

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Both sides have witnessed increasingly active exchanges at all level, steadily expanded cooperation areas, richer connotation of bilateral relations and deepened traditional friendship.

两国各层次的交流日益活跃，合作领域不断拓宽，双边关系的内涵更加丰富，传统友谊持续加深。

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The two sides have maintained relatively frequent exchanges of top-level visits, expanded areas of cooperation and achieved remarkable results.

双方保持了比较频繁的高层互访，合作的领域进一步扩大，合作的成果也比较显著。

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Bush also touched on expanded international cooperation in cleaner and more efficient energy technologies.

CNN: Bush urges more refineries, nuclear plants

Among the long list of agreements made during the summit are expanded economic cooperation and a proposed exchange of video letters between families separated by the divided Korean peninsula.

CNN: Korean leaders sign peace pledge

It's time not for another government space race, but for expanded space cooperation and collaboration -- an effort the United States would lead, as it does today with the International Space Station program.

CNN: China's giant, quiet step in space