外界因素：生活地域气候寒冷、干燥，工作环境空气被粉尘、化学气体污染，烟酒、辛辣饮食长期刺激，都易得慢性咽炎。
External factors: life region climate, dry, cold working environment air is dust, chemical gas pollution, alcohol and tobacco, spicy food stimulation, are easy to long-term chronic pharyngitis.
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