cái bù lù bái
露:显露;白:银子的代称。指有钱财不能泄露给别人看
明 海瑞《驿传议 无策》:“使客谓有此官银也,廪粮夫马,百计折乾。俗谓财不露白,今露白矣,孰能保群盗仗戈夺之?”
财不露白作宾语、定语;指随身携带的钱财不显露。
He that shows his purse longs to be rid of it.
沉默是金(打一成语)