三长两短的英语:unexpected misfortune; if sth. untoward should happen ...; if sth. were to happen (to sb.)...; sth. unfortunate, esp. death; unforeseen disasters [accidents]: 万一她有个三长两短 if anything untowar...
三长两短的法语:accident;malheur imprévu;si un grave accident lui arrive;si qn vient à mourir