Earth's layered structure -- a relatively thin crust of mobile plates, a solid mantle with gradual overturning movement, and the outer and inner core of molten and solid iron.
Earth's layered structure -- a relatively thin crust of mobile plates, a solid mantle with gradual overturning movement, and the outer and inner core of molten and solid iron.
地球是分层结构—相对运动变化的板块薄的外壳,一块具有逐渐加强的颠覆运动形式的固态硬壳,具有远离中心的外层和内部熔化的内核和固态铁。