虽然机舱压力可以被调节，以避免人体发生高空反应，但你仍会感到困倦或头痛。

Although the pressure of the cabin is adjusted to prevent altitude sickness, you could still experience sleepiness or a headache.

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然而，尽管眼疲劳可能会引起一些部位的疼痛或头痛，但它不会永久性地损害视力。

However, although eyestrain may cause some pain or headaches, it does not permanently damage eyesight.

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不断地抱怨有病，比如胃痛或头痛。

Frequent complaints about physical symptoms, such as stomachaches or headaches.

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