So结果的水平差异主要是协调世界时主钟水平差异的反映；
The level difference of these results at SO is a main reflection of the level difference of UTC master clock.
类似地，根据研究人员的说法，每天只听30分钟的轻音乐可能有助于降低压力和焦虑，从而保持健康的血糖水平。
Similarly, according to researchers, listening to just 30 minutes of soft music every day may help with healthy blood sugar levels, through the lowering of stress and anxiety.
人类的褪黑激素水平在夜晚上升，以响应黑暗和昼夜节律钟发出的信号。
In humans melatonin levels rise at night, in response to darkness and cues from the circadian clock.
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