急!地理专业英语翻译One interesting property of the continental and oc

One interesting property of the continental and oceanic crust is that these tectonic plates have the ability to rise and sink。This phenomenon,known as isostacy,occurs because the rust floats on top of the mantle like ice cubes in water。When the Earth is crust gains weight due to mountain building of glaclation,it deforms and sinks deeper into the mantle。If the weight is removed,the crust becomes more buoyant and floats higher in the mantle。陆壳（大陆地壳）和洋壳（海洋地壳）有一个有趣的性质,那就是这些构造板块会上升和下降。这种现象,被称为地壳均衡。它的发生是因为地壳漂浮在地幔上面,犹如冰浮水中。当陆地因为冰川作用下山脉增重时,大地会变形并且更深地陷入地幔。如果这重量消失,地壳会变得更轻快而在地幔中浮得更高。