Hours of watching the mobile phones can be harmful to their eyes and cause students to sleep less.

长时间看手机对眼睛有害，也会导致学生睡眠不足。

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Typically, the preferred sleep cycle is delayed in adolescents, which leads to many students not feeling sleepy until much later in the evenings.

通常，青少年的睡眠周期会延迟，这导致许多学生直到晚上很晚才感到困倦。

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Students tend to avoid sleep and starve themselves due to anxiety.

由于焦虑，学生们可能会不睡觉并且不吃东西。

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They took advantage of the time difference between California and Finland and held conference calls before the Stanford students went to sleep so the Aalto University students could pick up where the Californians left off.

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Note to college students: sleep through those classes.

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