The manually operated products offer zero carbon footprint, simplicity, low maintenance, and quiet operation.

这种手动操作的产品使汽车碳排放量为零，操作简单，维修费用低并运行时没有声音。

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What most hope to achieve is to have an almost zero carbon footprint and a life in harmony with nature. Here are some such places around the globe.

他们最大的愿望就是实现碳的零排放，与自然和谐相处。以下便是全球各地的近乎原生的“世外桃源”。

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This problem safe, dense energy storage in an automobile with practical range, zero tailpipe emissions and a smaller carbon footprint has been on the blackboard a long time.

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Google, for instance, publicly lists its renewable energy holdings as well as its carbon footprint that it wants to reduce to zero.

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