the amount of heat which the earth gets from the sun is different from time to time 什么意思

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theamountofheatwhichtheearthgetsfromthesunisdifferentfromtimetotime什么意思theamountofheatwhichtheearthg

the amount of heat which the earth gets from the sun is different from time to time 什么意思
the amount of heat which the earth gets from the sun is different from time to time 什么意思

the amount of heat which the earth gets from the sun is different from time to time 什么意思
太阳向地球辐射的热量时刻都在变化的.