Thetotalamountoficeisevenmoreawesomeifweestimatethewaterreleaseduponthehypotheticalmeltingoftheworld'sglaciers.请问整个句子该如何解释请帮我划分结构,最重要的是那个upon,releasedupon是什么东东啊

Question

The total amount of ice is even more awesome if we estimate the water released upon the hypothetical melting of the world's glaciers.
请问 整个句子该如何解释 请帮我划分结构,最重要的是 那个 upon ,released upon是什么东东啊,

Answer 1

The total amount of ice is even more awesome / if we estimate / the water released upon the hypothetical melting / of the world's glaciers.
the water released upon the hypothetical melting --->>
the water (which is released upon the hypothetical melting)
upon=on
on the hypothetical melting of the world's glaciers
on在这里就是字面意思：“在假设情况下 溶解在冰面上的水”