什么是 backbone?The vertebrate spine or spinal column.Something, such as the keel of a ship, that resembles a backbone.A main support or major sustaining factor: the backbone of a thesis. Geology A ridge forming the principal axis of a mountain.Geology The principal mountain ridge, range, or system of a region.Chemistry The main chain of atoms in a polymer.Strength of character; determination: displayed grit and backbone in facing adversity.