Eng: From our skin...

從我們的皮膚向內

From our skin inward

從我們的皮膚向內是我們的內部環境

From our skin inward is our inner environment

從我們的皮膚向外

From our skin outward

從我們的皮膚向外到我們能看和聽的範圍標記我們的外部環境

From our skin outwards to the extent of our ability to see and hear marks our external environment