The afternoon drifted by heavily, inducing sleep.

下午在沉重的睡眠中昏昏沉沉地度过。

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Serotonin is a neurotransmitter that has the effect of reducing pain, decreasing appetite, and producing a sense of calm, and in too large a quantity, inducing sleep.

这种血清素是一种神经递质，它有减轻疼痛，降低食欲，镇静的作用，一旦作用剂量较大时，它能促进睡眠。

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Composition for inducing sleep comprising essential oils as active ingredients, a percutaneous pharmaceutical agent comprising thereof, and a process for producing thereof.

含有精油作为活性成分的睡眠诱导物用组合物，含有该组合物的经皮吸收型睡眠诱导物，以及它们的制备方法。

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If you don't have apnea, some docs recommend cognitive behavioral therapy: You work with a trained therapist to change how you think about sleep and learn sleep-inducing techniques (like how to set up your sleep space and what to do before bedtime).

CNN: When to take a sleeping pill

For the most boring of the sleep inducing variety I think church services win hands down, but on the other hand it is a good place to practice sleeping with one's eyes open, a useful skill for judges and politicians.

BBC: News | UK | Where is the most boring place on earth? Your reaction

Dr. Rye and his colleagues have found the sleep-inducing spinal fluid in patients previously diagnosed with both conditions.

WSJ: Unraveling the Riddle of Too Much Sleep