求翻译：The core temperature in the body relates to the temperature in the main organs. Core temperature remains constant over long periods of time, although it does vary slightly through a 24 hour period. It is normally about of 0.5oC below normal first thing in the morning and can rise as much as of 1.0oC higher later in the day. Peripheral temperature relates to the body temperature on the surface of the skin or in the hand and feet. This may be lower than core temperature, especially in colder climes.是什么意思？

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