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Exports are supplied on long-term contracts that guarantee delivery many years ahead .

天然气的出口供给量是根据很多年前签署的长期合同来决定的。

Saudi aramco 's proved reserves alone could keep the world supplied for several decades .

仅仅沙特阿美石油公司的已探明储量就足够供给全球消耗几十年。

Keeping them maintained and supplied with spare parts ( from russia ) has not been easy .

备用零件（来自俄国）持续的保养和供给并非易事。

It keeps the body freshly supplied with oxygen and nutrients , while clearing away harmful waste matter .

清洁体内有害物质的同时，供给给身体新鲜的氧气和营养。

Nato air attacks , as well as weapons supplied by friendly gulf states , aided the rebels .

北约空袭以及友好海湾国家的武器供给帮助了反政府武装。