英语翻译北极冰川融化量已经超过百分之四十,科学家预计,在五十年后,海平面将上升五十至五十五米,并且俄罗斯的北极熊将会绝迹

More than 40 percent of Arctic ice has melt,and scientists expect that in fifty years,the sea-level will rise about fifty meters.Unfortunately,Russia's polar bears will be extinct.
Perhaps in the near future,Shanghai will become another Venice,but Venice will cease to exist.