Heavy rain and melting snow have swollen the river to its highest level in decades.
暴雨和积雪融化已经使该河流水位到达几十年来的最高水平。
2
They understand that the greatest and least predictable effect will be the melting of the polar-ice sheets and the consequent rise in sea level.
他们也明白，最大和最不可预测的影响将是极地冰盖融化和随之而来的海平面上升。
3
The 10 indicators of climate change include measurements of sea level rise taken from ships, the temperature of the upper atmosphere taken from weather balloons and field surveys of melting glaciers.