例句與造句

1. Deep inside the earth, the magnetic field arises as the fluid core oozes with hot currents of molten iron and this mechanical energy gets converted into electromagnetism.
2. Herndon's theory contradicts the view that has dominated geophysics since the 1940s : that Earth's inner core is a huge ball of partially crystallized iron and nickel, slowly cooling and growing as it surrenders heat into a fluid core.
3. In Herndon's view, these polarity flip-flops make no sense if the magnetic field is powered, as traditionalists contend, by heat from the crystallization of molten iron and nickel from the fluid core or from the decay of isolated radioactive isotopes.
4. It's difficult to find fluid core in a sentence. 用fluid core造句挺難的