summit 高层会议

A Western European summit was held in Bonn.
在波恩举行了西欧各国首脑会议。

charter n. 特许状， 执照， 宪章

The government chartered the new airline.
政府给这家新航空公司颁发了许可证。

pledge n. 保证; 誓言

The government should fulfil its pledge.
政府应该履行其诺言。

promote peace 促进和平

What does the United Nations do to promote peace and security?
联合国如何促进和平与安全？

boost economic co-op 加强经济合作