natural sleep

Napping during the day will interfere with your natural sleep patterns, if you do choose to nap, limit it to 30 minutes per day.

白天打盹会影响到你的自然睡眠模式，如果你选择打个盹，每天限制在30分钟以内。

Experimental Study of Oxygen Consumption and Cardiac Output under Anesthesia and during Natural Sleep

在麻醉和自然睡眠条件下氧耗量和心分输出量的实验研究

By the end of your trip, your body should have adjusted to its natural sleep pattern ( assuming you let yourself wake up naturally, not with an alarm).

假期结束时，你的身体会适应其自然的睡眠模式（假设每天早晨你都是自己醒来，而并非依靠闹钟）。

The pillow case is made of fine sateen, and conveys a soft and natural sleep sensation.

枕头套则由高级棉缎制作，散发出轻柔自然的睡眠感觉。

Stimulants like coffee, tea and energy drinks don't help as they can interfere with people's 'circadian rhythm', which is your natural sleep cycle. The same is true for alarm clocks and poor lighting.

咖啡、茶和功能饮料这类刺激饮品对睡眠质量并无帮助，因为他们会扰乱你的“生理节律”，也就是你的自然睡眠周期。闹钟与不良照明也一样会影响你的睡眠。