These are obviously different from other delta region and foothill region, how is the underwater element so special if there is no space objects?
These are obviously different from other delta region and foothill region, how is the underwater element so special if there is no space objects?
这和其他的三角洲和丘陵地区相比很不一样，如果没有天外来客，此地的地下水体元素成份怎会如此特殊？