At the risk of turning this column into “The Undercover Environmentalist”, I need to return to that vexed question of carbon dioxide emissions. In my first column of the year, I vowed to reduce my carbon footprint from air travel – easy enough, given that it was 50 tonnes of CO2 last year. A kind reader wrote to reassure me that I needn't lose any sleep, because the planes were making the journey anyway. Glib, I know: I've often said it myself to wind up environmentalists.
冒着将本专栏变成“卧底环保主义者”的风险，我需要再探讨一下二氧化碳排放这个伤脑筋的问题。在今年的第一篇专栏文章中，我发誓要减少我航空旅行的碳足迹——相当容易，因为我去年的这部分碳足迹达到50吨。一位好心的读者写信来安慰我说，我不用为此失眠，因为飞机无论如何都是要飞完那段行程。有点滑头，我知道：为了哄骗环保主义者，我自己也常常这么说。
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