Westerveld: But a lot of it is also, is not visible where it's happening under the surface if you look at the maps, for example, showing the carbon concentration in terrestrial and subsea permafrost.
Westerveld:但是,如果你查看地图,例如显示陆地和海底永久冻土中
碳浓度,其中很多发生在地表下
地方是不可见
。