# 我們控制核心體溫的一種方法,是利用皮膚表面,而且主要由三個部位的皮膚來進行:手、腳和頭。這三個區域在接近皮膚表面之處都密布著稱為動靜脈吻合(arteriovenousanastomoses)的血管——為什麼要睡覺?
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