单词	過苦日子
释义	過苦日子be hard up;
随便看	downwardly downwardly mobile downward mobility downward modulation downward motion downward multiplexing downwardness downward path downward pressure downward radiation downward reference downward risk downwards downwards coolant flow downward social comparison downward social mobility downward spiral downward stretch downward terrestrial radiation downward (total) radiation downward transition downward trend downward type bias downward velocity downward ventilation