xū / yù吁interjection 'Alas!'; to sigh词频 3.5含义to sigh; to gaspto appeal; to plead; to implore相关词语吁请呼吁气喘吁吁气吁吁喘吁吁例句他坐在那里长吁短叹。政府呼吁大家节约用水。