Climatarian means choosing to eat a diet that has minimal1 impact on the climate, i.e. one that excludes food transported a long way or meat whose production gives rise to CO2 emissions2.

氣候素食（climatarian）指選擇一種對氣候影響最小的飲食習慣，譬如，不吃那些長途運輸的食物，不吃那些會增加二氧化碳排放的肉食，等等。

For example:

Climate change is not normally on people's minds when they choose what to have for lunch, but a new diet is calling for people to go 'Climatarian' for their health and for the planet.

大家選擇午飯吃那些的時候一般不會考慮氣候變化的問題，不過，有個新的飲食習慣正在號召大家為了自己健康和地球的將來加入氣候素食。