They say this destabilization is occurring at speeds unprecedented in human history.
他们表示环境不稳定程正在以人类历史上最快度发展。
One obvious scenario is the potential destabilization caused by tens of millions of climate refugees, who'll be forced to move because they have no or little water, or because their livelihoods have been destroyed by the melting of glaciers.
一个明显情况是数以千万计气候难民可能造成不稳定,他们将被迫迁移, 因为他们没有水或水很少, 或者因为他们生计已被冰川融化摧毁。