Maybe your eyes are dry, your vision is blurry at the end of the day, or you have a persistent headache that just won't quit?
一天下来也许你觉得眼睛干涩，视力模糊，或者感觉持续性头痛？这些都是“数码视觉疲劳”的症状。
Albert had a persistent headache that lasted for three days.
艾伯特连续头痛了三天。
Cough tends to recur or is accompanied by high fever, rash or persistent headache.
反复咳嗽伴有高烧、皮疹或持续性头痛。
If cough persists for more than 7 days, tends to recur, or is accompanied by rash or persistent headache, consult a doctor.
如果咳嗽持续超过7天，容易复发，或伴有皮疹或持续性头痛，咨询医生。
Warning: a persistent cough may be a sign of a serious condition. If cough persists for more than 1 week, tends to recur, or is accompanied by fever, rash, or persistent headache, consult a doctor.
警告：持续的咳嗽可能是一种更为严重的症状，如果咳嗽持续超过1周，或重新复发，或伴随发烧，出疹，或持续的头痛，请咨询医生。
Warning: a persistent cough may be a sign of a serious condition. If cough persists for more than 1 week, tends to recur, or is accompanied by fever, rash, or persistent headache, consult a doctor.
警告：持续的咳嗽可能是一种更为严重的症状，如果咳嗽持续超过1周，或重新复发，或伴随发烧，出疹，或持续的头痛，请咨询医生。
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