The alternative is to liquefy the hydrogen at great expense and transport it in road tankers refrigerated with liquid nitrogen.
唯一的代替方法是花大价钱用液氮作为冷却剂液化氢气，用罐车从公路上运输。
The alternative is to liquefy the hydrogen at great expense and transport it in road tankers refrigerated with liquid nitrogen.
一个替代的办法是以巨大的代价把氢气液化，并用带液氮冷却的罐车运输。
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