"You don't have to do all of your exercise in one setting. You could break a 30 minute per day recommendation into three 10 minute bouts of exercise."

VOA: standard.2010.02.26

They trust to the fact that the depositors won't all come on the same day, just like a goldsmith banker -he leaves only enough gold in the safe to cover the kind of withdrawals that are normally accepted.

他们是基于这样一种考量,即储户们不会在同一天上门来取钱,正如金匠银行家那样,他留存在保险箱中的黄金数量,刚好可以应付一般的提款要求

耶鲁公开课 - 金融市场课程节选