生理时钟 shēnglǐshízhōng biological clock Origin Definitions Defs Strokes Stroke Words Sentences Sents 生理 shēnglǐ noun physiology The biological functions and activities of a living organism or its parts.时钟 時鐘 shízhōng noun clock (timepiece) a device used for measuring and displaying the time that is generally larger than a watch