Don't worry about rain. And do not use a plastic or canvas sheet.

不要担心下雨，不要使用塑料或帆布覆盖。

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Reader's Digest Version: Paper and plastic are both lousy choices. Take your own reusable canvas bags.

读者文摘解答：纸袋和塑料袋都不是好选择。自己带可以循环利用的布袋最好。

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Reusable items such as canvas bags and handkerchiefs are encouraged for use instead of paper tissues and plastic bags.

鼓励使用可再用资源，比如布袋和手绢代替纸巾和塑料袋。

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"It's essentially 40 tonnes of winterised tents - about 1, 300 tents in total, rolls of plastic sheeting, canvas tarpaulin, " a spokesman for Prime Minister Tony Blair said.

BBC: Race to deliver Afghan aid