The body's natural rhythms mean we all feel dull and sleepy between 1 and 3 pm.
身体的自然节律造成我们在下午1点至3点间都会感到无精打采、昏昏欲睡。
《柯林斯英汉双解大词典》
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This is in comparison with a drop of just under 1% in the total yogurt and kefir market, according to natural and organic market research company SPINS.