Idiom Magic : SALT SOMETHING AWAY 把某東西(常指錢) 儲存起來以備將來

【明報專訊】In the days before refrigeration, meat was covered with salt and stored to preserve(保存)it for long periods. That has given us this expression, but today it means to put away or save something—usually money—for the future. "Please, would you do me a favour(幫我一個忙)and salt this away for me?" Mortimer asked.