In addition, environmental pollution, a major natural disaster, major infectious diseases and other non-traditional security problems remain serious.

此外，环境污染，重大自然灾害，重大传染性疾病等非传统安全问题依然严重存在。

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Chief executive Martin Jay said: This revised procurement policy provides us with longer-term security and is another move to alleviating the peaks and troughs that are traditional problems in shipbuilding.

BBC: BAE, Vosper win destroyer order