第二段最后一句说The higher the ratio of oxgen 18 to oxgen 16 in a sedimentary specimen, the more land ice there was when the sediment was laid down 怎么理解?
前面不是说蒸发的水return到了continental ice sheets 里面嘛,那不是应该是陆地里的oxgen 18比较少吗?纠结~~作者: panbangzhu 时间: 2012-1-3 06:38