Every organism has a life span which is highly characteristic.

每个生物体的生命周期都极其独特。

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A wind turbine has a life span of at least 25 years.

风力透平的寿命至少是25年。

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By age of vine: usually vine has a life span, wines made from grapes of mature vine is of better quality.

葡萄树的树龄：一般来说，葡萄树有一个生命的周期，用其成熟阶段的葡萄酿酒，相对品质要更好。

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There are others, such as methane, which has a shorter life span but traps heat more effectively.

NPR: Experts: CO2 Record Illustrates 'Scary' Trend

The filter material developed by Nikolaidis and his colleagues, with funding from the Critical Technologies Program and industry, has at least a 20-year life span.

CNN: Filter cleans arsenic-tainted water

But bacteria and viruses breed fast, so natural selection has time, within the span of a human life, to make a difference.

ECONOMIST: Evolution: Beetle drive | The