1.to do a slipshod piece of work with damaging result; to do slovenly work; to be irresponsible; 2.to fail to keep a promise or an appointment是什么意思_1.to do a slipshod piece of work with damaging result; to do slovenly work; to be irresponsible; 2.to fail to keep a promise or an appointment在线翻译_英语_读音_用法_例句