对于经由岩浆熔融物质冷却结晶的岩石来说，这个名称是很合适的。
It is. an appropriate name for rocks that have cooled and crystallized from hot, molten rock material called magma.
对于经由岩浆熔融物质冷却结晶的岩石来说，这个名称是很合适的。
It is an appropriate name for rocks that have cooled and crystallized from hot, molten rock material called magma.
高温地核的熔融物质为地球创造了一个强烈的磁场，保护我们免受太阳风的伤害。
The Earth has a strong magnetic field created by its hot molten core - or centre - and this protects us from the Sun's harmful solar winds.
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