have been through the mill

... grinding mill 研磨机,磨坊 have been through the mill 经历磨炼,历尽沧桑,从痛苦中学到经验 a coffee mill 咖啡研磨机 ...

... grinding mill 研磨机,磨坊 have been through the mill 经历磨炼,历尽沧桑,从痛苦中学到经验 a coffee mill 咖啡研磨机 ...

... grinding mill 研磨机,磨坊 have been through the mill 经历磨炼,历尽沧桑,从痛苦中学到经验 a coffee mill 咖啡研磨机 ...