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同义词
柯林斯高阶英汉双解学习词典释义
英汉词典释义
英英词典释义
  • Noun
    1. something or someone that causes anxiety; a source of unhappiness;
    "New York traffic is a constant concern""it's a major worry"
    2. pain in the head caused by dilation of cerebral arteries or muscle contractions or a reaction to drugs
行业词典
  • 医学: 头痛:同cephalagia;
    旅游: 头痛;
    药学: 头痛;头部疼痛,包括头的前、后、偏侧部疼痛和整个头部疼痛。;头痛[病];以头痛为主要表现的疾病。;