The weight of the glaciers and sheets forces them to flow down towards the coast where, at the water's edge, warm waves and spring weather weaken the ice, causing pieces to break off and enter the sea as icebergs.冰层和冰川的重量迫使它们流向海岸.在大海的边缘,暖流和热风的融冰效应导致冰川破裂,形成冰山,流向海洋. ____________________________.Many become stuck in shallow waters, but those that stay in the main current make it to the open sea, where they last for approximately two years before melting completely.许多冰山在浅水搁浅,而另一些冰山则继续随洋流汇入远洋.它们进入海洋约两年后才能完全融化.
