the circadian clock is linked to nature's cycle of dark and light. 4582 什麽意思？

生物鐘與自然的晝夜循環有著聯系。nature's cycle，自然循環dark and light是晝夜之意。light是光，指白天，nature's cycle of dark and light 合起來就是自然的晝夜循環。 希望幫到妳！