Diamond thinks they laid the moai on wooden sledges, hauled over log rails, but that required both a lot of wood and a lot of people.
戴蒙德认为他们把摩艾石像放在木制雪橇上，然后拖过原木轨道，但这需要很多木材和人力。
3
These are wood and stone sculptures that he's carved and marked with fire to illustrate the ferocity and intensity of the forces that have shaped our planet over millions of years.