明永冰川的消融，会不会是卡瓦·博格不悦的另一个征兆？
Could Mingyong's retreat be another sign of Kawagebo's displeasure?
与安慰剂相比较，托纳博沙明显减少了不管有无疼痛的先兆频率。
Tonabersatsignificantly reduced the frequency of aura with or withoutpain, compared with placebo.
31位患有偏头痛先兆的病人接受了每日一次的托纳博沙治疗或每月清洗一次（随机顺序）持续三个月的安慰剂交叉治疗。
Thirty-one patients with migraine with aura received once-dailytonabersat or placebo for three months each (in random order)with a one-month washout between treatment crossover.
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