他们在沙漠里继续走，直到他们最后迷了路。
They went on in the desert until at last they couldn't find their way.
他们的土地几乎寸草不生；他们在沙漠荒野里放牧牲口；人们从看上去像闪光的浮冰的物质中提炼盐块。
Almost nothing grows on their land; their animals graze on desert bushes; the people mine ingots of salt from what looks like shimmering pack ice.
他们普遍要求生产出来的燃料汽车能够在北方冬天和沙漠夏天等气候环境下不加燃料行驶500公里。
The generally accepted goal is to produce a vehicle that can go 500 kilometres without refuelling while surviving northern winters and desert summers.
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