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

急!地理专业英语翻译
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.