One idea that has been discussed in the past, Mr Cohen said, is for donors to contribute to a global reserve or co-ordinated national reserves of food so that food can be stockpiled.

• 科恩表示，过去曾讨论过一种想法，即捐赠者向一个全球性储备机构，或协调一致的国家粮食储备机构进行捐赠，这样粮食就可以被储存起来。