You bring somebody in the sleep lab, you put electrodes on their scalp and you see what these-- what sort of electrical activities you get in the brain.

把人叫来睡眠实验室，把电极贴在他们的头皮上,你就能看到-,他们有什么脑电活动。

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It does not say what effect this has on relationships or important activities, such as sleep.

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High school students in particular are facing greater academic pressure and college competition than ever before, and all those AP classes and extracurricular activities can eat into sleep time.

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They had been planning to attend political training classes and participate in group activities during the day and sleep in tents at night, he said.

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